/**
 * FORMULARIO DE CONTACTO SEGURO - ESTILOS
 * Diseño innovador con estética cyber-security moderna
 * Sistema de diseño basado en variables CSS para consistencia
 */

/* ============================================
   VARIABLES CSS Y SISTEMA DE DISEÑO
   ============================================ */
:root {
    /* Paleta de colores - Tema Cyber Security */
    --color-primary: #10B981;
    --color-primary-dark: #059669;
    --color-primary-light: #34D399;
    --color-accent: #3B82F6;
    --color-danger: #EF4444;
    --color-warning: #F59E0B;
    --color-success: #10B981;
    
    /* Escala de grises */
    --color-bg-main: #0F172A;
    --color-bg-secondary: #1E293B;
    --color-bg-tertiary: #334155;
    --color-surface: #1E293B;
    --color-surface-elevated: #334155;
    
    /* Textos */
    --color-text-primary: #F1F5F9;
    --color-text-secondary: #94A3B8;
    --color-text-muted: #64748B;
    
    /* Bordes */
    --color-border: #334155;
    --color-border-hover: #475569;
    --color-border-focus: var(--color-primary);
    
    /* Tipografía */
    --font-display: 'Space Mono', monospace;
    --font-body: 'Outfit', sans-serif;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Radios de borde */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 20px rgba(16, 185, 129, 0.3);
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   RESET Y BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-main);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   FONDOS ANIMADOS
   ============================================ */
.background-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.1;
    background-image: 
        linear-gradient(var(--color-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ============================================
   CONTENEDOR PRINCIPAL
   ============================================ */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   HEADER
   ============================================ */
.header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.security-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-xl);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    box-shadow: var(--shadow-glow);
    margin-bottom: var(--spacing-xl);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: var(--shadow-glow); }
    50% { transform: scale(1.05); box-shadow: 0 0 30px rgba(16, 185, 129, 0.5); }
}

.title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.title-main {
    font-family: var(--font-display);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.title-sub {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* ============================================
   FORMULARIO
   ============================================ */
.form-container {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
    animation: slideUp 0.8s ease-out 0.2s backwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Efecto de borde brillante */
.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

/* Campo honeypot - oculto */
.honeypot {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* ============================================
   GRUPOS DE FORMULARIO
   ============================================ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    animation: fadeInUp 0.6s ease-out backwards;
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.15s; }
.form-group:nth-child(3) { animation-delay: 0.2s; }
.form-group:nth-child(4) { animation-delay: 0.25s; }
.form-group:nth-child(5) { animation-delay: 0.3s; }
.form-group:nth-child(6) { animation-delay: 0.35s; }
.form-group:nth-child(7) { animation-delay: 0.4s; }
.form-group:nth-child(8) { animation-delay: 0.45s; }
.form-group:nth-child(9) { animation-delay: 0.5s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group.full-width {
    grid-column: 1 / -1;
}

/* ============================================
   LABELS
   ============================================ */
.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.label-text {
    flex: 1;
}

.required {
    color: var(--color-danger);
    font-weight: 700;
}

.char-counter {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-weight: 400;
}

/* ============================================
   INPUTS
   ============================================ */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    color: var(--color-text-muted);
    pointer-events: none;
    transition: color var(--transition-base);
    z-index: 1;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) calc(var(--spacing-md) * 3);
    background: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: var(--text-base);
    transition: all var(--transition-base);
    outline: none;
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--color-border-hover);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-input:focus + .input-icon,
.form-select:focus + .input-icon,
.form-textarea:focus + .input-icon {
    color: var(--color-primary);
}

/* Placeholder */
.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

/* Estados de validación */
.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--color-danger);
}

.form-input.success,
.form-select.success,
.form-textarea.success {
    border-color: var(--color-success);
}

/* ============================================
   CHECKBOX
   ============================================ */
.checkbox-wrapper {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.form-checkbox {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    cursor: pointer;
    user-select: none;
}

.checkbox-custom {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-secondary);
    position: relative;
    transition: all var(--transition-base);
}

.checkbox-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 12px;
    border: solid var(--color-text-primary);
    border-width: 0 2px 2px 0;
    transform: translate(-50%, -60%) rotate(45deg) scale(0);
    transition: transform var(--transition-base);
}

.form-checkbox:checked + .checkbox-label .checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.form-checkbox:checked + .checkbox-label .checkbox-custom::after {
    transform: translate(-50%, -60%) rotate(45deg) scale(1);
}

.form-checkbox:focus + .checkbox-label .checkbox-custom {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.checkbox-text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.privacy-link {
    color: var(--color-primary);
    text-decoration: underline;
    transition: color var(--transition-base);
}

.privacy-link:hover {
    color: var(--color-primary-light);
}

/* ============================================
   MENSAJES DE ERROR Y AYUDA
   ============================================ */
.error-message {
    font-size: var(--text-sm);
    color: var(--color-danger);
    display: none;
    animation: shake 0.4s ease-in-out;
}

.error-message.show {
    display: block;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.help-text {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ============================================
   BOTÓN DE ENVÍO
   ============================================ */
.submit-button {
    width: 100%;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.submit-button:hover::before {
    left: 100%;
}

.submit-button:active {
    transform: translateY(0);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.button-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.submit-button.loading .button-text,
.submit-button.loading .button-icon {
    display: none;
}

.submit-button.loading .button-loader {
    display: block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   MENSAJE DE ESTADO
   ============================================ */
.status-message {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: 500;
    display: none;
    animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.status-message.show {
    display: block;
}

.status-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--color-success);
    color: var(--color-success);
}

.status-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--color-danger);
    color: var(--color-danger);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    margin-top: auto;
    padding-top: var(--spacing-3xl);
    text-align: center;
    animation: fadeIn 1s ease-out 0.6s backwards;
}

.security-features {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
}

.feature svg {
    color: var(--color-primary);
}

.copyright {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s ease-out;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    animation: scaleIn 0.3s ease-out;
    box-shadow: var(--shadow-xl);
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    color: var(--color-text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    max-height: calc(90vh - 200px);
}

.modal-body p,
.modal-body ul {
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.modal-body h3 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    font-size: var(--text-lg);
    font-family: var(--font-display);
}

.modal-body ul {
    padding-left: var(--spacing-xl);
}

.modal-body li {
    margin-bottom: var(--spacing-sm);
}

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
}

.modal-accept {
    padding: var(--spacing-md) var(--spacing-2xl);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: var(--text-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modal-accept:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    :root {
        --text-3xl: 1.75rem;
        --text-4xl: 2rem;
    }
    
    .container {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .form-container {
        padding: var(--spacing-xl);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .form-group {
        grid-column: 1;
    }
    
    .security-features {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .submit-button {
        font-size: var(--text-base);
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .modal-content {
        margin: var(--spacing-md);
    }
}

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

/* Focus visible para teclado */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   UTILIDADES
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}