/* ============================================
   VARIABLES CSS - Colores desde config.json
   se aplican dinámicamente via JS
   ============================================ */
:root {
    --color-principal: #d8a7b1;
    --color-secundario: #fff5f8;
    --color-acento: #b76e79;
    --color-texto: #4a2c35;
    --gold: #c9a96e;
    --gold-light: #e8d5a3;
    --white: #ffffff;
    --shadow-soft: 0 4px 30px rgba(0,0,0,0.08);
    --shadow-medium: 0 8px 40px rgba(0,0,0,0.12);
    --radius: 16px;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Montserrat', sans-serif;
    color: var(--color-texto);
    background: var(--color-secundario);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.hidden {
    display: none !important;
}

/* ============================================
   PORTADA (Cover Screen)
   ============================================ */
.cover-screen {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secundario) 0%, var(--color-principal) 50%, var(--color-acento) 100%);
    overflow: hidden;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.cover-screen.closing {
    opacity: 0;
    transform: scale(1.1);
    pointer-events: none;
}

/* Partículas flotantes */
.particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--gold-light), transparent);
    opacity: 0;
    animation: floatParticle linear infinite;
}

@keyframes floatParticle {
    0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { transform: translateY(-10vh) rotate(360deg); opacity: 0; }
}

/* Contenido de portada */
.cover-content {
    text-align: center;
    z-index: 2;
    padding: 20px;
    animation: fadeInUp 1.2s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

.cover-subtitle {
    font-family: 'Montserrat', sans-serif;
    font-weight: 300;
    font-size: 1rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--white);
    opacity: 0.9;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.cover-title {
    font-family: 'Great Vibes', cursive;
    font-size: clamp(3rem, 10vw, 6rem);
    color: var(--white);
    text-shadow: 0 3px 20px rgba(0,0,0,0.2);
    margin-bottom: 4px;
    line-height: 1.1;
}

.cover-name {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.5rem, 5vw, 2.8rem);
    font-weight: 300;
    color: var(--gold-light);
    letter-spacing: 3px;
    text-shadow: 0 2px 15px rgba(0,0,0,0.2);
    margin-bottom: 30px;
}

.cover-date {
    font-family: 'Montserrat', sans-serif;
    font-weight: 300;
    font-size: 0.85rem;
    color: var(--white);
    opacity: 0.8;
    letter-spacing: 2px;
    margin-top: 24px;
}

/* Sobre / Envelope */
.envelope-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 10px auto;
}

.envelope {
    width: 120px;
    height: 90px;
    position: relative;
    margin-bottom: 20px;
    perspective: 500px;
}

.envelope-body {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--white), #f8e8ed);
    border-radius: 4px;
    position: relative;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.envelope-flap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: linear-gradient(135deg, #f8e8ed, var(--white));
    clip-path: polygon(0 0, 100% 0, 50% 100%);
    z-index: 2;
    transform-origin: top center;
    transition: transform 0.6s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.envelope-container.open .envelope-flap {
    transform: rotateX(180deg);
}

.envelope-letter {
    color: var(--color-principal);
    font-size: 1.5rem;
    transform: translateY(5px);
    transition: transform 0.6s ease 0.3s;
}

.envelope-container.open .envelope-letter {
    transform: translateY(-30px);
}

/* Corazón animado */
.heart-button {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 10px;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.heart-svg {
    width: 70px;
    height: 70px;
    fill: var(--white);
    filter: drop-shadow(0 4px 15px rgba(183,110,121,0.5));
    animation: heartbeat 1.5s ease-in-out infinite;
    transition: var(--transition);
}

.heart-button:hover .heart-svg {
    filter: drop-shadow(0 6px 25px rgba(183,110,121,0.7));
    transform: scale(1.08);
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    15% { transform: scale(1.15); }
    30% { transform: scale(1); }
    45% { transform: scale(1.1); }
    60% { transform: scale(1); }
}

.heart-text {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    color: var(--white);
    opacity: 0.85;
    letter-spacing: 1px;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ============================================
   INVITACIÓN PRINCIPAL
   ============================================ */
.invitation-screen {
    min-height: 100vh;
    background: var(--color-secundario);
    padding-bottom: 40px;
}

.invitation-screen.show {
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Botón de música */
.music-toggle {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 100;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 2px solid var(--color-principal);
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    color: var(--color-acento);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-soft);
}

.music-toggle:hover {
    background: var(--color-principal);
    color: var(--white);
    transform: scale(1.1);
}

.music-toggle .fa-music { display: block; }
.music-toggle.playing .fa-music { display: none; }
.music-waves { display: none; gap: 2px; align-items: flex-end; height: 16px; }
.music-toggle.playing .music-waves { display: flex; }

.music-waves span {
    display: block;
    width: 3px;
    background: var(--color-acento);
    border-radius: 2px;
    animation: wave 0.8s ease-in-out infinite;
}

.music-toggle.playing:hover .music-waves span { background: var(--white); }
.music-waves span:nth-child(1) { height: 8px; animation-delay: 0s; }
.music-waves span:nth-child(2) { height: 14px; animation-delay: 0.2s; }
.music-waves span:nth-child(3) { height: 10px; animation-delay: 0.4s; }

@keyframes wave {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.4); }
}

/* Header de invitación */
.invitation-header {
    text-align: center;
    padding: 60px 20px 30px;
    animation: slideDown 0.8s ease-out;
}

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

.ornament {
    max-width: 200px;
    margin: 0 auto;
    color: var(--gold);
    opacity: 0.6;
}

.ornament svg { width: 100%; height: auto; }

.invitation-title {
    font-family: 'Great Vibes', cursive;
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    color: var(--color-acento);
    margin: 10px 0 5px;
    line-height: 1.2;
}

.invitation-name {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 300;
    color: var(--color-texto);
    letter-spacing: 2px;
}

/* Mensaje */
.invitation-message-section {
    padding: 20px 30px 30px;
    text-align: center;
}

.invitation-message {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    font-style: italic;
    color: var(--color-texto);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.85;
}

/* Imagen de invitación */
.invitation-image-section {
    padding: 10px 20px 30px;
    display: flex;
    justify-content: center;
}

.image-frame {
    max-width: 500px;
    width: 100%;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    border: 3px solid var(--color-principal);
    position: relative;
    background: var(--white);
}

.image-frame::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--gold-light), var(--color-principal), var(--gold));
    z-index: -1;
    opacity: 0.5;
}

.image-frame img {
    width: 100%;
    height: auto;
    display: block;
}

/* Countdown */
.countdown-section {
    padding: 40px 20px;
    text-align: center;
    background: linear-gradient(180deg, transparent, rgba(216,167,177,0.08), transparent);
}

.section-heading {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--color-acento);
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.section-heading i { margin-right: 8px; opacity: 0.7; }

.countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--white);
    border-radius: 12px;
    padding: 16px 14px 12px;
    min-width: 68px;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(216,167,177,0.2);
}

.countdown-number {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--color-acento);
    line-height: 1;
}

.countdown-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-texto);
    opacity: 0.6;
    margin-top: 4px;
}

.countdown-separator {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2rem;
    color: var(--color-principal);
    font-weight: 300;
}

.countdown-big-day {
    font-family: 'Great Vibes', cursive;
    font-size: 2rem;
    color: var(--color-acento);
    animation: pulse 2s infinite;
}

/* Botones de acción */
.actions-section {
    padding: 30px 20px 40px;
    text-align: center;
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    max-width: 500px;
    margin: 0 auto;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 18px 24px;
    background: var(--white);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--color-texto);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(216,167,177,0.15);
    transition: var(--transition);
    min-width: 110px;
}

.action-btn i {
    font-size: 1.6rem;
    color: var(--color-acento);
    transition: var(--transition);
}

.action-btn span {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.action-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
    background: var(--color-principal);
    color: var(--white);
}

.action-btn:hover i { color: var(--white); }

/* Footer */
.invitation-footer {
    text-align: center;
    padding: 30px 20px 50px;
    color: var(--color-texto);
    opacity: 0.6;
}

.footer-text {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1rem;
    font-style: italic;
}

.footer-heart {
    margin-top: 8px;
    color: var(--color-principal);
    animation: heartbeat 2s infinite;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
    .countdown-item { min-width: 60px; padding: 12px 10px 10px; }
    .countdown-number { font-size: 1.8rem; }
    .action-btn { min-width: 90px; padding: 14px 16px; }
    .envelope { width: 100px; height: 75px; }
    .heart-svg { width: 60px; height: 60px; }
}