/**
 * Estilos principales - Sistema de Gestión de Impuesto Predial
 * Landing Page + Estilos Generales
 */

/* ==================== VARIABLES ==================== */
:root {
    --primary-color: #1e3a5f;
    --primary-dark: #152a45;
    --primary-light: #2d5a87;
    --secondary-color: #c9a227;
    --secondary-light: #d4b84a;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --text-dark: #333;
    --text-light: #666;
    --text-muted: #999;
    --bg-light: #f8f9fa;
    --bg-white: #fff;
    --border-color: #dee2e6;
    --shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 5px 30px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* ==================== RESET & BASE ==================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

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

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

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

/* ==================== UTILIDADES ==================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 40px;
}

.text-center { text-align: center; }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-muted { color: var(--text-muted); }

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

/* ==================== BOTONES ==================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    color: var(--bg-white);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: var(--text-dark);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

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

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ==================== HEADER ==================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--bg-white);
    box-shadow: var(--shadow);
    padding: 15px 0;
}

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

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

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 1.4rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-dark);
}

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

.header-cta {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* ==================== HERO SECTION ==================== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'%3E%3Cpath fill='rgba(255,255,255,0.05)' d='M0 0h100v100H0z'/%3E%3C/svg%3E");
    opacity: 0.1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 25px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 25px;
}

.hero-title .highlight {
    color: var(--secondary-color);
}

.hero-description {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 35px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.hero-feature i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-card {
    background: var(--bg-white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    color: var(--text-dark);
}

.hero-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
}

/* ==================== TRUST BAR ==================== */
.trust-bar {
    background: var(--bg-light);
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
}

.trust-items {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.trust-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.trust-item span {
    font-weight: 600;
    color: var(--text-dark);
}

/* ==================== BENEFICIOS ==================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.benefit-card {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--bg-white);
    font-size: 1.8rem;
}

.benefit-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.benefit-text {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ==================== PROCESO ==================== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: var(--border-color);
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 100px;
    height: 100px;
    background: var(--bg-white);
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: var(--transition);
}

.process-step:hover .step-number {
    background: var(--primary-color);
    color: var(--bg-white);
}

.step-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.step-text {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ==================== HIGHLIGHT BOX ==================== */
.highlight-box {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    padding: 50px;
    border-radius: 20px;
    text-align: center;
    margin: 50px 0;
}

.highlight-box h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.highlight-box p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.highlight-box .success-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* ==================== TESTIMONIOS ==================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 25px;
    font-size: 5rem;
    color: var(--primary-color);
    opacity: 0.1;
    font-family: Georgia, serif;
    line-height: 1;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-light);
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-weight: 700;
    font-size: 1.2rem;
}

.testimonial-name {
    font-weight: 700;
    color: var(--text-dark);
}

.testimonial-city {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.testimonial-rating {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

/* ==================== FAQ ==================== */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-question i {
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 300px;
}

.faq-answer p {
    color: var(--text-light);
}

/* ==================== CTA SECTION ==================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--bg-white);
    text-align: center;
    padding: 80px 0;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-section p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 35px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--primary-dark);
    color: var(--bg-white);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-text {
    color: var(--bg-white);
}

.footer-brand p {
    opacity: 0.8;
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--secondary-color);
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.95rem;
    opacity: 0.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-legal {
    display: flex;
    gap: 25px;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-legal a:hover {
    color: var(--secondary-color);
}

/* ==================== FORMULARIO ==================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.form-label .required {
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: var(--transition);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.form-control.error {
    border-color: var(--danger-color);
}

.form-hint {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 5px;
}

.form-error {
    font-size: 0.85rem;
    color: var(--danger-color);
    margin-top: 5px;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
    padding-right: 40px;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-top: 3px;
    accent-color: var(--primary-color);
}

.checkbox-group label {
    font-size: 0.95rem;
    color: var(--text-light);
}

.checkbox-group a {
    color: var(--primary-color);
    text-decoration: underline;
}

.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload:hover {
    border-color: var(--primary-color);
    background: var(--bg-light);
}

.file-upload i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.file-upload p {
    color: var(--text-light);
    margin-bottom: 5px;
}

.file-upload small {
    color: var(--text-muted);
}

.file-list {
    margin-top: 15px;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
    background: var(--bg-light);
    border-radius: 8px;
    margin-bottom: 8px;
}

.file-item-name {
    display: flex;
    align-items: center;
    gap: 10px;
}

.file-item-remove {
    color: var(--danger-color);
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.2rem;
}

/* ==================== ALERTAS ==================== */
.alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert i {
    font-size: 1.2rem;
    margin-top: 2px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* ==================== MODAL ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-white);
    border-radius: 15px;
    max-width: 700px;
    max-height: 80vh;
    width: 90%;
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 20px 25px;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--danger-color);
}

.modal-body {
    padding: 25px;
    max-height: calc(80vh - 140px);
    overflow-y: auto;
}

.modal-body h3 {
    color: var(--primary-color);
    margin: 20px 0 10px;
}

.modal-body h3:first-child {
    margin-top: 0;
}

.modal-body p, .modal-body li {
    color: var(--text-light);
    margin-bottom: 10px;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps::before {
        display: none;
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .benefits-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 15px;
    }
    
    .trust-items {
        flex-direction: column;
        gap: 20px;
    }
}