/* 
 * Estilos principales del sistema de Cartas al Viejito Pascuero
 * Diseño elegante, navideño y responsive
 */

/* ===== VARIABLES ===== */
:root {
    --color-principal: #c41e3a;
    --color-secundario: #1a472a;
    --color-acento: #ffd700;
    --color-fondo: #0a0a0a;
    --color-texto: #ffffff;
    --color-borde: #2a2a2a;
    --color-exito: #28a745;
    --color-error: #dc3545;
    --color-advertencia: #ffc107;
    --color-info: #17a2b8;
    
    --sombra: 0 10px 30px rgba(0, 0, 0, 0.5);
    --sombra-suave: 0 5px 15px rgba(0, 0, 0, 0.3);
    --transicion: all 0.3s ease;
    
    --radio-borde: 15px;
    --radio-borde-pequeno: 10px;
}

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-fondo);
    color: var(--color-texto);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Fondo navideño */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(196, 30, 58, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(26, 71, 42, 0.1) 0%, transparent 50%),
        linear-gradient(45deg, rgba(10, 10, 10, 0.9), rgba(20, 20, 20, 0.9));
    z-index: -2;
}

/* ===== TIPOGRAFÍA ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Mountains of Christmas', cursive;
    font-weight: 700;
    margin-bottom: 1rem;
}

.christmas-text {
    font-family: 'Mountains of Christmas', cursive;
    color: var(--color-acento);
    text-shadow: 
        2px 2px 0 var(--color-principal),
        4px 4px 0 rgba(0, 0, 0, 0.2);
}

.display-1, .display-2, .display-3, .display-4 {
    font-family: 'Mountains of Christmas', cursive;
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
}

/* ===== TARJETAS ===== */
.card {
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-borde);
    border-radius: var(--radio-borde);
    transition: var(--transicion);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--sombra);
    border-color: var(--color-acento);
}

.welcome-card {
    background: linear-gradient(135deg, 
        rgba(196, 30, 58, 0.1), 
        rgba(26, 71, 42, 0.1));
    border: 2px solid var(--color-principal);
    animation: brillo 3s infinite alternate;
}

@keyframes brillo {
    0% { box-shadow: 0 0 20px rgba(196, 30, 58, 0.3); }
    100% { box-shadow: 0 0 40px rgba(255, 215, 0, 0.5); }
}

.form-card {
    background: rgba(20, 20, 20, 0.9);
    border: 2px solid var(--color-secundario);
}

.info-card, .stats-card, .special-message {
    background: rgba(25, 25, 25, 0.9);
}

.success-card {
    background: linear-gradient(135deg, 
        rgba(20, 20, 20, 0.95), 
        rgba(30, 30, 30, 0.95));
    border: 3px solid var(--color-exito);
    animation: latido 2s infinite;
}

@keyframes latido {
    0%, 100% { border-color: var(--color-exito); }
    50% { border-color: var(--color-acento); }
}

/* ===== ENCABEZADOS DE TARJETAS ===== */
.card-header {
    border-bottom: 2px solid rgba(255, 215, 0, 0.3);
    font-family: 'Mountains of Christmas', cursive;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--color-principal), #a0151e) !important;
}

.bg-gradient-success {
    background: linear-gradient(135deg, var(--color-secundario), #0d331a) !important;
}

.bg-gradient-info {
    background: linear-gradient(135deg, var(--color-info), #0c5460) !important;
}

.bg-gradient-warning {
    background: linear-gradient(135deg, var(--color-acento), #b8860b) !important;
}

/* ===== FORMULARIOS ===== */
.form-control {
    background-color: rgba(40, 40, 40, 0.8);
    border: 1px solid var(--color-borde);
    color: var(--color-texto);
    transition: var(--transicion);
}

.form-control:focus {
    background-color: rgba(50, 50, 50, 0.9);
    border-color: var(--color-acento);
    box-shadow: 0 0 0 0.25rem rgba(255, 215, 0, 0.25);
    color: var(--color-texto);
}

.form-control-lg {
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
}

.form-floating > label {
    color: #aaa;
    padding-left: 3rem;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--color-acento);
    padding-left: 1.5rem;
}

/* ===== BOTONES ===== */
.btn {
    border-radius: var(--radio-borde-pequeno);
    font-weight: 600;
    transition: var(--transicion);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::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: 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.2rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-principal), #a0151e);
    border-color: var(--color-principal);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #a0151e, var(--color-principal));
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(196, 30, 58, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-secundario), #0d331a);
    border-color: var(--color-secundario);
}

.btn-warning {
    background: linear-gradient(135deg, var(--color-acento), #b8860b);
    border-color: var(--color-acento);
    color: #000;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #b8860b, var(--color-acento));
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 215, 0, 0.3);
}

.btn-outline-light, .btn-outline-warning, .btn-outline-success, .btn-outline-info {
    border-width: 2px;
}

.btn-outline-warning:hover {
    color: #000;
}

.btn-enviar {
    background: linear-gradient(135deg, var(--color-acento), #ff8c00);
    border: none;
    color: #000;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 10px 20px rgba(255, 215, 0, 0.3);
}

.btn-enviar:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 30px rgba(255, 215, 0, 0.4);
}

.btn-enviar:active {
    transform: translateY(-1px);
}

/* ===== BADGES ===== */
.badge {
    padding: 0.5em 1em;
    border-radius: var(--radio-borde-pequeno);
    font-weight: 600;
}

.bg-warning {
    background: linear-gradient(135deg, var(--color-acento), #b8860b) !important;
}

.bg-success {
    background: linear-gradient(135deg, var(--color-secundario), #0d331a) !important;
}

.bg-info {
    background: linear-gradient(135deg, var(--color-info), #0c5460) !important;
}

/* ===== ALERTAS ===== */
.alert {
    border-radius: var(--radio-borde-pequeno);
    border: 2px solid transparent;
    backdrop-filter: blur(5px);
}

.alert-success {
    background-color: rgba(40, 167, 69, 0.1);
    border-color: var(--color-exito);
    color: #d4edda;
}

.alert-danger {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: var(--color-error);
    color: #f8d7da;
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-color: var(--color-advertencia);
    color: #fff3cd;
}

.alert-info {
    background-color: rgba(23, 162, 184, 0.1);
    border-color: var(--color-info);
    color: #d1ecf1;
}

/* ===== TIMELINE ===== */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-principal), var(--color-acento));
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-icon {
    position: absolute;
    left: -30px;
    top: 0;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--color-acento);
}

.timeline-content {
    padding-left: 15px;
}

/* ===== ICONOS ESPECIALES ===== */
.icon-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border: 5px solid rgba(255, 255, 255, 0.2);
    position: relative;
}

.icon-ring {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 3px solid var(--color-acento);
    border-radius: 50%;
    animation: rotar 10s linear infinite;
}

@keyframes rotar {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.success-icon {
    position: relative;
}

.success-icon .icon-circle {
    background: linear-gradient(135deg, var(--color-exito), #155724);
}

/* ===== PROGRESS BAR ===== */
.progress {
    background-color: rgba(40, 40, 40, 0.8);
    border-radius: 10px;
    overflow: hidden;
    height: 10px;
}

.progress-bar {
    border-radius: 10px;
    transition: width 0.3s ease;
}

/* ===== FOOTER ===== */
footer {
    background: rgba(20, 20, 20, 0.9);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--color-borde);
}

/* ===== ANIMACIONES ===== */
.animate__animated {
    animation-duration: 1s;
}

.animate__pulse {
    animation-duration: 2s;
    animation-iteration-count: infinite;
}

/* ===== EFECTOS DE SCROLL ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== DECORACIONES NAVIDEÑAS ===== */
.nav-decoration {
    position: fixed;
    z-index: -1;
    pointer-events: none;
}

.santa-hat {
    top: 10px;
    right: 10%;
    width: 100px;
    height: 100px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path fill="%23c41e3a" d="M50,10 L90,60 L10,60 Z"/><circle cx="50" cy="60" r="40" fill="%23c41e3a"/><circle cx="50" cy="60" r="30" fill="%23ffffff"/></svg>');
    animation: flotar 6s ease-in-out infinite;
}

.christmas-ball {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    animation: flotar 4s ease-in-out infinite;
}

.ball-1 {
    top: 20%;
    left: 5%;
    background: radial-gradient(circle at 30% 30%, #ff0000, #8b0000);
    animation-delay: 0s;
}

.ball-2 {
    top: 40%;
    right: 10%;
    background: radial-gradient(circle at 30% 30%, #00ff00, #006400);
    animation-delay: 1s;
}

.ball-3 {
    bottom: 30%;
    left: 15%;
    background: radial-gradient(circle at 30% 30%, #0000ff, #00008b);
    animation-delay: 2s;
}

.star {
    width: 30px;
    height: 30px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="%23ffd700" d="M12,2 L14.5,8.5 L21.5,9.5 L16.5,14.5 L18,21.5 L12,17.5 L6,21.5 L7.5,14.5 L2.5,9.5 L9.5,8.5 Z"/></svg>');
    animation: brillar 2s infinite alternate;
}

.star-1 {
    top: 15%;
    right: 20%;
    animation-delay: 0.5s;
}

.star-2 {
    bottom: 20%;
    right: 5%;
    animation-delay: 1.5s;
}

.reno {
    width: 120px;
    height: 120px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><ellipse cx="50" cy="50" rx="40" ry="30" fill="%238B4513"/><circle cx="30" cy="30" r="5" fill="%23FFD700"/><circle cx="70" cy="30" r="5" fill="%23FFD700"/><path d="M50,10 L60,30 L40,30 Z" fill="%238B4513"/></svg>');
}

.christmas-tree {
    width: 100px;
    height: 150px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 150"><path fill="%23008000" d="M50,10 L80,60 L20,60 Z M50,40 L75,80 L25,80 Z M50,70 L70,110 L30,110 Z"/><rect x="45" y="110" width="10" height="40" fill="%238B4513"/></svg>');
}

@keyframes flotar {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes brillar {
    0% { opacity: 0.3; transform: scale(1); }
    100% { opacity: 1; transform: scale(1.2); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .display-1 {
        font-size: 3rem;
    }
    
    .display-3 {
        font-size: 2.5rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .nav-decoration {
        display: none;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-icon {
        left: -25px;
        width: 25px;
        height: 25px;
    }
}

@media (max-width: 576px) {
    .card-body {
        padding: 1.5rem;
    }
    
    .form-control-lg {
        padding: 0.75rem 1rem;
    }
    
    .icon-circle {
        width: 80px;
        height: 80px;
    }
    
    .icon-circle i {
        font-size: 2rem;
    }
}

/* ===== UTILIDADES ===== */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(var(--color-fondo), var(--color-fondo)) padding-box,
                linear-gradient(135deg, var(--color-principal), var(--color-acento)) border-box;
}

.glow {
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.7);
}

/* ===== SCROLLBAR PERSONALIZADA ===== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-fondo);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--color-principal), var(--color-acento));
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(var(--color-acento), var(--color-principal));
}