/* ========================================
   Multi Firmas - Styles CSS
   Software de Firma Digital para México
   ======================================== */

/* Variables CSS */
:root {
    --primary: #0066CC;
    --primary-dark: #004999;
    --secondary: #00AA55;
    --accent: #FF6B35;
    --purple: #8B5CF6;
    --dark: #1a1a2e;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --white: #ffffff;
    --bg-light: #f8fafc;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.3s ease;
}

/* Reset y Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
    color: var(--gray-600);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo svg {
    flex-shrink: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
}

.nav a:hover {
    color: var(--primary);
}

.header-cta {
    padding: 10px 20px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-700);
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 24px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav a {
    padding: 12px 0;
    font-size: 1rem;
    font-weight: 500;
    border-bottom: 1px solid var(--gray-200);
}

.mobile-cta {
    margin-top: 16px;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--white) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: grid;
    gap: 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
    width: fit-content;
}

.hero h1 {
    max-width: 700px;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    color: var(--gray-600);
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* Hero Dashboard Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    margin-top: 48px;
}

.hero-dashboard {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    max-width: 480px;
    width: 100%;
}

.dashboard-header {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    background: var(--gray-100);
}

.dashboard-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
}

.doc-preview {
    padding: 24px;
}

.doc-header-bar {
    height: 8px;
    background: var(--primary);
    border-radius: 4px;
    margin-bottom: 16px;
    width: 60%;
}

.doc-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.doc-line {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
}

.doc-line.long { width: 100%; }
.doc-line.medium { width: 75%; }
.doc-line.short { width: 50%; }

.doc-signature-area {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.signature-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--bg-light);
    border-radius: var(--radius);
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px;
}

.section-tag {
    display: inline-block;
    padding: 6px 12px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.125rem;
}

/* ========================================
   PROBLEM SECTION
   ======================================== */
.problem-section {
    background: var(--bg-light);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.problem-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.problem-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 107, 53, 0.1);
    border-radius: var(--radius);
    margin-bottom: 16px;
    color: var(--accent);
}

.problem-card h3 {
    margin-bottom: 12px;
}

.problem-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    text-align: center;
}

.pstat {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.pstat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.pstat-text {
    font-size: 0.9375rem;
    color: var(--gray-600);
}

/* ========================================
   SOLUTION SECTION
   ======================================== */
.solution-section {
    background: var(--white);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.solution-text h2 {
    margin-bottom: 16px;
}

.solution-text p {
    margin-bottom: 24px;
}

.solution-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.solution-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.solution-list svg {
    flex-shrink: 0;
}

.solution-visual {
    display: flex;
    justify-content: center;
}

.solution-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow-lg);
}

.sc-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--gray-100);
    font-weight: 600;
}

.sc-body {
    padding: 20px;
}

.sc-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-200);
}

.sc-item:last-child {
    border-bottom: none;
}

.sc-label {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.sc-value {
    font-weight: 600;
}

.sc-footer {
    padding: 16px 20px;
    background: var(--secondary);
}

.sc-badge {
    color: var(--white);
    font-weight: 600;
    font-size: 0.875rem;
}

/* ========================================
   USE CASES SECTION
   ======================================== */
.use-cases-section {
    background: var(--bg-light);
}

.use-cases-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.use-case-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.uc-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 102, 204, 0.1);
    border-radius: var(--radius);
    margin-bottom: 16px;
}

.use-case-card h3 {
    margin-bottom: 12px;
}

.uc-examples {
    margin-top: 16px;
    padding-left: 16px;
}

.uc-examples li {
    position: relative;
    padding-left: 20px;
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.uc-examples li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
}

/* ========================================
   FEATURES SECTION
   ======================================== */
.features-section {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 102, 204, 0.1);
    border-radius: var(--radius);
    margin-bottom: 16px;
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: 12px;
}

/* ========================================
   SIGNATURE TYPES SECTION
   ======================================== */
.signature-types-section {
    background: var(--bg-light);
}

.signature-types-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
}

.signature-type-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.signature-type-card:hover {
    transform: translateY(-4px);
}

.st-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    border-radius: 50%;
}

.st-icon.check { background: rgba(0, 170, 85, 0.1); color: var(--secondary); }
.st-icon.gps { background: rgba(255, 107, 53, 0.1); color: var(--accent); }
.st-icon.signature { background: rgba(0, 102, 204, 0.1); color: var(--primary); }
.st-icon.photo-face { background: rgba(139, 92, 246, 0.1); color: var(--purple); }
.st-icon.photo { background: rgba(139, 92, 246, 0.1); color: var(--purple); }

.signature-type-card h3 {
    margin-bottom: 8px;
}

.st-desc {
    font-size: 0.875rem;
    margin-bottom: 16px;
}

.st-use-cases {
    text-align: left;
    font-size: 0.875rem;
}

.st-use-cases li {
    padding: 6px 0;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}

.st-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
}

/* ========================================
   COMPARISON SECTION
   ======================================== */
.comparison-section {
    background: var(--white);
}

.comparison-table {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 32px;
}

.comp-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    background: var(--gray-900);
    color: var(--white);
}

.comp-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    border-bottom: 1px solid var(--gray-200);
}

.comp-row:last-child {
    border-bottom: none;
}

.comp-cell {
    padding: 16px 20px;
    font-size: 0.9375rem;
}

.comp-cell:not(:last-child) {
    border-right: 1px solid var(--gray-200);
}

.comp-header .comp-cell {
    font-weight: 600;
}

.nom151-col {
    background: rgba(255, 107, 53, 0.05);
}

.multifirmas-col {
    background: rgba(0, 170, 85, 0.05);
}

.comparison-cta {
    text-align: center;
}

.comp-message {
    font-size: 1.125rem;
    margin-bottom: 24px;
    color: var(--gray-700);
}

/* ========================================
   API SECTION
   ======================================== */
.api-section {
    background: var(--gray-900);
    color: var(--white);
}

.api-section h2,
.api-section h3 {
    color: var(--white);
}

.api-section p {
    color: var(--gray-300);
}

.api-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.api-section .section-tag {
    background: var(--accent);
}

.api-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 32px;
}

.api-feature {
    display: flex;
    gap: 16px;
}

.api-feature svg {
    flex-shrink: 0;
}

.api-feature h4 {
    color: var(--white);
    margin-bottom: 4px;
}

.code-block {
    background: #1e1e1e;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.code-header {
    padding: 12px 16px;
    background: #2d2d2d;
    font-size: 0.875rem;
    color: var(--gray-400);
}

.code-block pre {
    padding: 20px;
    overflow-x: auto;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.8125rem;
    line-height: 1.6;
}

.code-block code {
    color: #d4d4d4;
}

/* ========================================
   TESTIMONIALS SECTION
   ======================================== */
.testimonials-section {
    background: var(--bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.testimonial-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.testimonial-rating {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.testimonial-text {
    font-size: 1.0625rem;
    font-style: italic;
    margin-bottom: 24px;
    color: var(--gray-700);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    font-weight: 700;
    border-radius: 50%;
}

.author-name {
    display: block;
    font-weight: 600;
}

.author-role {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ========================================
   PRICING SECTION
   ======================================== */
.pricing-section {
    background: var(--white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    border-color: var(--primary);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.pricing-header p {
    margin-bottom: 24px;
}

.pricing-price {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.period {
    font-size: 1rem;
    color: var(--gray-500);
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.9375rem;
}

.pricing-note {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq-section {
    background: var(--bg-light);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-100);
}

.faq-question svg {
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 24px 20px;
    max-height: 500px;
}

.faq-answer p {
    font-size: 0.9375rem;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact-section {
    background: var(--white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
}

.contact-info h2 {
    margin-bottom: 16px;
}

.contact-info > p {
    margin-bottom: 32px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-method svg {
    flex-shrink: 0;
    color: var(--primary);
}

.method-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.method-value {
    font-weight: 600;
}

.contact-form {
    background: var(--bg-light);
    padding: 32px;
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 64px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    margin-top: 16px;
    color: var(--gray-400);
    max-width: 300px;
}

.footer-col h4 {
    color: var(--white);
    margin-bottom: 16px;
}

.footer-col a {
    display: block;
    padding: 6px 0;
    color: var(--gray-400);
    font-size: 0.9375rem;
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
    color: var(--gray-400);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    color: var(--gray-400);
}

.footer-social a:hover {
    color: var(--white);
}

/* ========================================
   RESPONSIVE - MEJORADO
   ======================================== */

/* Large tablets */
@media (max-width: 1200px) {
    .container {
        padding: 0 20px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .section {
        padding: 60px 0;
    }
}

/* Tablets */
@media (max-width: 1024px) {
    .solution-content,
    .api-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .api-content {
        gap: 32px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-stats {
        gap: 32px;
    }
    
    .signature-types-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 16px;
    }
    
    .pricing-grid {
        gap: 16px;
    }
    
    .problem-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        gap: 16px;
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 16px;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
        gap: 16px;
    }
}

/* Mobile navigation critical */
@media (max-width: 900px) {
    .header-content {
        height: 64px;
    }
    
    .nav {
        display: none;
    }
    
    .header-cta {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        padding: 0;
    }
    
    .hero {
        padding: 100px 0 48px;
        min-height: auto;
    }
    
    .hero h1 {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }
    
    .hero-subtitle {
        font-size: 1.0625rem;
    }
}

/* Mobile base */
@media (max-width: 768px) {
    /* Typography */
    h1 { font-size: clamp(1.5rem, 5vw, 2rem); }
    h2 { font-size: clamp(1.25rem, 4vw, 1.75rem); }
    h3 { font-size: clamp(1rem, 3vw, 1.25rem); }
    
    .section {
        padding: 48px 0;
    }
    
    .section-header {
        margin-bottom: 32px;
    }
    
    .section-header h2 {
        margin-bottom: 12px;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .section-tag {
        padding: 4px 10px;
        font-size: 0.6875rem;
    }
    
    /* Hero */
    .hero {
        text-align: center;
        padding: 96px 0 48px;
    }
    
    .hero-badge {
        margin: 0 auto;
        font-size: 0.75rem;
        padding: 6px 12px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        justify-content: center;
        gap: 24px;
    }
    
    .stat {
        flex: 0 0 calc(50% - 12px);
        text-align: center;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .hero-visual {
        margin-top: 32px;
    }
    
    .hero-dashboard {
        max-width: 100%;
    }
    
    /* Problem Section */
    .problem-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .problem-card {
        padding: 24px;
    }
    
    .problem-icon {
        width: 48px;
        height: 48px;
    }
    
    .problem-stats {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    
    .pstat {
        padding: 20px 16px;
    }
    
    .pstat-number {
        font-size: 1.75rem;
    }
    
    /* Use Cases */
    .use-cases-tabs {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 0.875rem;
        flex: 0 0 auto;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .use-case-card {
        padding: 24px;
    }
    
    .uc-icon {
        width: 56px;
        height: 56px;
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .feature-card {
        padding: 24px;
    }
    
    .feature-icon {
        width: 48px;
        height: 48px;
    }
    
    /* Signature Types */
    .signature-types-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    
    .signature-type-card {
        padding: 24px 16px;
    }
    
    .st-icon {
        width: 64px;
        height: 64px;
    }
    
    .st-icon svg {
        width: 32px;
        height: 32px;
    }
    
    /* Comparison */
    .comparison-table {
        overflow-x: auto;
        border-radius: var(--radius);
    }
    
    .comp-header,
    .comp-row {
        grid-template-columns: 1.5fr 1fr 1fr;
        min-width: 450px;
    }
    
    .comp-cell {
        padding: 12px 16px;
        font-size: 0.875rem;
    }
    
    /* API */
    .api-section {
        padding: 48px 0;
    }
    
    .code-block pre {
        font-size: 0.75rem;
        padding: 16px;
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .testimonial-card {
        padding: 24px;
    }
    
    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto 32px;
    }
    
    .pricing-card {
        padding: 24px;
    }
    
    .pricing-price {
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    
    .price {
        font-size: 2rem;
    }
    
    .pricing-features li {
        font-size: 0.875rem;
    }
    
    /* FAQ */
    .faq-question {
        padding: 16px 20px;
        font-size: 0.9375rem;
    }
    
    .faq-answer {
        padding: 0 20px;
    }
    
    /* Contact */
    .contact-content {
        gap: 32px;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .form-group {
        margin-bottom: 16px;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-brand {
        text-align: center;
    }
    
    .footer-brand p {
        max-width: 100%;
    }
    
    .footer-col {
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    /* Typography */
    h1 { font-size: clamp(1.375rem, 5vw, 1.75rem); }
    h2 { font-size: clamp(1.125rem, 4vw, 1.5rem); }
    h3 { font-size: clamp(0.9375rem, 3vw, 1.125rem); }
    
    .section {
        padding: 40px 0;
    }
    
    .section-header {
        margin-bottom: 24px;
    }
    
    .section-tag {
        padding: 3px 8px;
        font-size: 0.625rem;
    }
    
    /* Hero */
    .hero {
        padding: 88px 0 40px;
    }
    
    .hero h1 {
        font-size: clamp(1.25rem, 5vw, 1.75rem);
    }
    
    .hero-subtitle {
        font-size: 0.9375rem;
        line-height: 1.5;
    }
    
    .hero-cta {
        gap: 10px;
    }
    
    .hero-cta .btn {
        max-width: 100%;
        padding: 12px20px;
        font-size: 0.9375rem;
    }
    
    .hero-stats {
        gap: 16px;
        margin-top: 24px;
        padding-top: 24px;
    }
    
    .stat {
        flex: 0 0 100%;
    }
    
    .stat-number {
        font-size: 1.375rem;
    }
    
    /* Mobile Menu */
    .mobile-menu {
        top: 64px;
        padding: 20px;
        max-height: calc(100vh - 64px);
        overflow-y: auto;
    }
    
    .mobile-nav a {
        padding: 14px 0;
        font-size: 1rem;
    }
    
    .mobile-cta {
        margin-top: 12px;
    }
    
    /* Problem */
    .problem-card {
        padding: 20px;
    }
    
    .problem-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 12px;
    }
    
    .problem-card h3 {
        font-size: 1rem;
    }
    
    .problem-card p {
        font-size: 0.875rem;
    }
    
    .problem-stats {
        grid-template-columns: 1fr;
    }
    
    .pstat {
        padding: 16px;
    }
    
    .pstat-number {
        font-size: 1.5rem;
    }
    
    /* Use Cases */
    .use-cases-tabs {
        flex-direction: column;
        gap: 8px;
    }
    
    .tab-btn {
        width: 100%;
        justify-content: center;
        padding: 12px 16px;
    }
    
    .use-case-card {
        padding: 20px;
    }
    
    /* Features */
    .feature-card {
        padding: 20px;
    }
    
    .feature-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 12px;
    }
    
    /* Signature Types */
    .signature-types-grid {
        grid-template-columns: 1fr;
    }
    
    .signature-type-card {
        padding: 20px;
    }
    
    .st-icon {
        width: 56px;
        height: 56px;
    }
    
    .st-desc {
        font-size: 0.8125rem;
    }
    
    .st-use-cases li {
        font-size: 0.8125rem;
    }
    
    /* Comparison */
    .comp-header,
    .comp-row {
        grid-template-columns: 1.2fr 0.8fr 0.8fr;
        min-width: 400px;
    }
    
    .comp-cell {
        padding: 10px 12px;
        font-size: 0.8125rem;
    }
    
    /* API */
    .code-block {
        border-radius: var(--radius);
    }
    
    .code-header {
        font-size: 0.75rem;
        padding: 8px 12px;
    }
    
    .code-block pre {
        font-size: 0.6875rem;
        padding: 12px;
    }
    
    /* Testimonials */
    .testimonial-card {
        padding: 20px;
    }
    
    .testimonial-text {
        font-size: 0.9375rem;
    }
    
    .testimonial-rating {
        margin-bottom: 12px;
    }
    
    .author-avatar {
        width: 40px;
        height: 40px;
    }
    
    /* Pricing */
    .pricing-grid {
        gap: 24px;
    }
    
    .pricing-card {
        padding: 20px;
    }
    
    .pricing-header h3 {
        font-size: 1.25rem;
    }
    
    .price {
        font-size: 1.75rem;
    }
    
    .pricing-features li {
        font-size: 0.8125rem;
    }
    
    /* FAQ */
    .faq-grid {
        gap: 12px;
    }
    
    .faq-item {
        border-radius: var(--radius);
    }
    
    .faq-question {
        padding: 14px 16px;
        font-size: 0.875rem;
    }
    
    .faq-answer p {
        font-size: 0.875rem;
    }
    
    /* Contact */
    .contact-form {
        padding: 20px;
        border-radius: var(--radius);
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        padding: 10px 14px;
        font-size: 0.9375rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9375rem;
    }
    
    .btn-large {
        padding: 12px 24px;
        font-size: 1rem;
    }
    
    /* Footer */
    .footer {
        padding: 48px 0 20px;
    }
    
    .footer-brand p {
        font-size: 0.875rem;
    }
    
    .footer-col h4 {
        font-size: 1rem;
    }
    
    .footer-col a {
        padding: 8px 0;
        font-size: 0.875rem;
    }
    
    .footer-bottom p {
        font-size: 0.8125rem;
    }
}

/* Extra small mobile */
@media (max-width: 360px) {
    .container {
        padding: 0 12px;
    }
    
    .hero h1 {
        font-size: 1.25rem;
    }
    
    .hero-subtitle {
        font-size: 0.875rem;
    }
    
    .hero-cta .btn {
        padding: 10px 16px;
        font-size: 0.875rem;
    }
    
    .signature-type-card,
    .feature-card,
    .use-case-card {
        padding: 16px;
    }
    
    .btn {
        padding: 10px 16px;
    }
}

/* Landscape mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        padding: 80px 0 40px;
        min-height: auto;
    }
    
    .hero-stats {
        display: none;
    }
    
    .mobile-menu {
        max-height: calc(100vh - 60px);
    }
}

/* High DPI mobile */
@media (max-width: 768px) and (-webkit-min-device-pixel-ratio: 2) {
    .btn {
        -webkit-tap-highlight-color: transparent;
    }
    
    .nav a,
    .tab-btn,
    .category-btn {
        -webkit-tap-highlight-color: transparent;
    }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   INDUSTRIES PAGE STYLES
   ======================================== */

/* Industries Hero */
.industries-hero {
    padding: 140px 0 60px;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--white) 100%);
    text-align: center;
}

.industries-hero h1 {
    margin-bottom: 16px;
}

.industries-hero p {
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Search and Filter Section */
.search-filter-section {
    padding: 32px 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 72px;
    z-index: 100;
}

.search-filter-container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Search Box */
.search-box {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.search-box svg {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    pointer-events: none;
}

.search-box input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--bg-light);
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.1);
}

.search-box input::placeholder {
    color: var(--gray-400);
}

/* Category Filters */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.category-btn {
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--gray-600);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.category-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 102, 204, 0.05);
}

.category-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

/* Industries Grid Section */
.industries-grid-section {
    padding: 48px 0;
    background: var(--bg-light);
    min-height: 400px;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* Industry Card */
.industry-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.industry-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.industry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.industry-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 204, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Industry Icon */
.industry-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 50%;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.industry-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.industry-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.industry-description {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Industry Examples */
.industry-examples {
    margin-bottom: 20px;
}

.industry-examples h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.industry-examples ul {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.industry-examples li {
    position: relative;
    padding-left: 18px;
    font-size: 0.875rem;
    color: var(--gray-600);
}

.industry-examples li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--secondary);
    border-radius: 50%;
}

/* Industry CTA Button */
.industry-cta {
    margin-top: auto;
    padding: 12px 24px;
    font-size: 0.875rem;
}

/* No Results Message */
.no-results {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 80px 24px;
    color: var(--gray-500);
}

.no-results svg {
    width: 64px;
    height: 64px;
    margin-bottom: 24px;
    opacity: 0.5;
}

.no-results h3 {
    font-size: 1.25rem;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.no-results p {
    font-size: 0.9375rem;
}

/* Error Message */
.error-message {
    padding: 40px;
    text-align: center;
    color: var(--accent);
    font-weight: 600;
}

/* Pagination Section */
.pagination-section {
    padding: 32px 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 8px 12px;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--gray-600);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-ellipsis {
    padding: 0 8px;
    color: var(--gray-400);
}

.results-count {
    text-align: center;
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ========================================
   RESPONSIVE - INDUSTRIES PAGE
   ======================================== */
@media (max-width: 1024px) {
    .search-filter-section {
        top: 64px;
    }
    
    .industries-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .industries-hero {
        padding: 100px 0 40px;
        text-align: center;
    }
    
    .industries-hero h1 {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }
    
    .industries-hero p {
        font-size: 1rem;
        max-width: 100%;
    }
    
    .search-filter-section {
        top: 64px;
        padding: 16px 0;
    }
    
    .search-box {
        max-width: 100%;
    }
    
    .search-box input {
        padding: 12px 16px 12px 44px;
        font-size: 0.9375rem;
    }
    
    .category-filters {
        gap: 8px;
        padding-bottom: 8px;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        justify-content: flex-start;
    }
    
    .category-btn {
        flex-shrink: 0;
        padding: 8px 14px;
        font-size: 0.8125rem;
    }
    
    .industries-grid-section {
        padding: 32px 0;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .industry-card {
        padding: 20px;
    }
    
    .industry-icon {
        width: 56px;
        height: 56px;
        margin-bottom: 12px;
    }
    
    .industry-icon svg {
        width: 28px;
        height: 28px;
    }
    
    .industry-title {
        font-size: 1.125rem;
    }
    
    .industry-description {
        font-size: 0.875rem;
        margin-bottom: 16px;
    }
    
    .industry-cta {
        padding: 10px 20px;
        font-size: 0.8125rem;
    }
    
    .no-results {
        padding: 60px 24px;
    }
    
    .no-results svg {
        width: 48px;
        height: 48px;
    }
    
    .no-results h3 {
        font-size: 1.125rem;
    }
}

@media (max-width: 480px) {
    .industries-hero {
        padding: 88px 0 32px;
    }
    
    .industries-hero p {
        font-size: 0.9375rem;
    }
    
    .search-filter-container {
        gap: 16px;
    }
    
    .search-box input {
        padding: 10px 14px 10px 40px;
        font-size: 0.875rem;
    }
    
    .category-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    .industries-grid-section {
        padding: 24px 0;
    }
    
    .industry-card {
        padding: 16px;
    }
    
    .industry-examples h4 {
        font-size: 0.75rem;
    }
    
    .industry-examples li {
        font-size: 0.8125rem;
        padding-left: 14px;
    }
    
    .industry-examples li::before {
        width: 5px;
        height: 5px;
        top: 7px;
    }
    
    .pagination {
        gap: 6px;
    }
    
    .pagination-btn {
        min-width: 36px;
        height: 36px;
        font-size: 0.8125rem;
    }
}

/* Use Cases Page Responsive */
@media (max-width: 768px) {
    .use-cases-hero {
        padding: 100px 0 40px;
    }
    
    .use-cases-hero h1 {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }
    
    .use-cases-hero p {
        font-size: 1rem;
    }
}

/* ========================================
   SUBTLE LINKS FOR SEO
   ======================================== */
.link-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 16px;
    padding: 6px 12px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-500);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    transition: var(--transition);
}

.link-more:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: rgba(0, 102, 204, 0.05);
}

.link-more svg {
    width: 14px;
    height: 14px;
}

.section-link {
    display: block;
    text-align: center;
    margin-top: 32px;
}

.section-link a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-500);
    transition: var(--transition);
}

.section-link a:hover {
    color: var(--primary);
}

.section-link a svg {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease;
}

.section-link a:hover svg {
    transform: translateX(4px);
}

.comparison-link {
    display: block;
    text-align: center;
    margin-top: 24px;
    padding: 16px;
    background: rgba(0, 102, 204, 0.05);
    border-radius: var(--radius);
}

.comparison-link a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary);
}

.comparison-link a:hover {
    text-decoration: underline;
}