/* ========================================
   VARIABLES Y RESET
   ======================================== */

:root {
    /* Colores modo claro */
    --bg-primary: #faf8f3;
    --bg-secondary: #f5f1e8;
    --text-primary: #2c2416;
    --text-secondary: #5a5246;
    --accent: #8b6f47;
    --accent-hover: #6d5635;
    --border: #d4c9b8;
    --shadow: rgba(44, 36, 22, 0.1);

    /* Tipografía */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Lora', serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Transiciones */
    --transition: 0.3s ease;
}

/* Modo oscuro */
body.dark-theme {
    --bg-primary: #1a1613;
    --bg-secondary: #252119;
    --text-primary: #e8dfd0;
    --text-secondary: #b8ab99;
    --accent: #c9a871;
    --accent-hover: #dbb883;
    --border: #3d3528;
    --shadow: rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.8;
    transition: background 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
}

/* ========================================
   TOGGLE DE TEMA
   ======================================== */

.theme-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    box-shadow: 0 4px 12px var(--shadow);
}

.theme-toggle:hover {
    transform: rotate(15deg) scale(1.1);
    border-color: var(--accent);
}

.theme-toggle svg {
    color: var(--text-primary);
    transition: opacity var(--transition);
}

.theme-toggle .hidden {
    display: none;
}

/* ========================================
   CONTROLES DE PÁGINA
   ======================================== */

.page-controls {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    width: 100%;
}

.copy-poem-btn {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    box-shadow: 0 4px 12px var(--shadow);
}

.copy-poem-btn:hover {
    transform: scale(1.1);
    border-color: var(--accent);
}

.copy-poem-btn svg {
    color: var(--text-primary);
    transition: opacity var(--transition);
}

.copy-poem-btn.hidden,
.copy-poem-btn .hidden {
    display: none;
}

.copy-poem-btn.success {
    border-color: var(--accent);
    background: var(--bg-primary);
    animation: successPulse 0.4s ease;
}

body.dark-theme .copy-poem-btn.success {
    background: var(--bg-secondary);
    border-color: var(--accent);
}

.copy-poem-btn.success .check-icon {
    color: var(--accent);
    display: block !important;
}

body.dark-theme .copy-poem-btn.success .check-icon {
    color: var(--accent);
}

.copy-poem-btn.success .copy-icon {
    display: none;
}

@keyframes successPulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }

    100% {
        transform: scale(1.1);
    }
}



/* ========================================
   LAYOUT GENERAL
   ======================================== */

.screen {
    min-height: 100vh;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding: var(--spacing-lg);
    padding-top: calc(var(--spacing-xl) + 1rem);
}

.screen.active {
    display: flex;
}

.container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

/* ========================================
   PANTALLA DE BIENVENIDA
   ======================================== */

.main-title-2 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--accent);
    letter-spacing: -0.02em;
}

.main-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 4px;
    color: var(--accent);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.brand-image {
    display: block;
    margin: 0 auto var(--spacing-xs);
    width: 128px;
}

.fade-in {
    animation: fadeIn 1s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Formulario */
.welcome-form {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 8px 24px var(--shadow);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group.hidden {
    display: none;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.form-group input[type="email"] {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition);
}

.form-group input[type="email"]:focus {
    outline: none;
    border-color: var(--accent);
}

/* Texto informativo centrado debajo del input */
.form-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-sm);
    line-height: 1.5;
    font-style: italic;
    text-align: center;
    display: block;
    width: 100%;
    opacity: 0.9;
}

/* Info usuario existente */
.user-info-text {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-secondary);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: 8px;
    animation: fadeIn 0.5s ease;
}

.user-info-text strong {
    color: var(--accent);
}

/* Opciones de frecuencia - RESPONSIVE */
.frequency-options {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.freq-btn {
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-body);
    color: var(--text-primary);
    min-height: 85px;
}

.freq-btn:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 6px 20px var(--shadow);
}

.freq-btn.selected {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.freq-btn .icon {
    font-size: 1.8rem;
}

.freq-btn .text {
    font-size: 0.90rem;
    text-align: center;
    word-wrap: break-word;
    line-height: 1.2;
}

/* Botón principal */
.btn-primary {
    width: 100%;
    padding: 1rem 2rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 12px var(--shadow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--shadow);
}

.btn-primary.hidden {
    display: none;
}

/* ========================================
   PANTALLA DE POEMA
   ======================================== */

/* Progreso */
.progress-section {
    margin-bottom: var(--spacing-md);
}



.progress-bar {
    position: relative;
    width: 100%;
    height: 14px;
    background: var(--bg-secondary);
    border-radius: 20px;
    overflow: visible;
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-xs);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent-hover));
    border-radius: 20px;
    transition: width 0.6s ease;
    width: 0%;
}

.milestones {
    position: absolute;
    top: -4px;
    left: 0;
    width: 100%;
    height: 20px;
    pointer-events: none;
}

.milestone-marker {
    position: absolute;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: 50%;
    transform: translateX(-50%);
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.milestone-marker.unlocked {
    background: var(--accent);
    border-color: var(--accent);
    animation: milestoneUnlock 0.5s ease;
}

@keyframes milestoneUnlock {

    0%,
    100% {
        transform: translateX(-50%) scale(1);
    }

    50% {
        transform: translateX(-50%) scale(1.3);
    }
}

/* Contador de poemas */
.poems-count {
    text-align: center;
    margin-top: var(--spacing-xs);
}

.poems-count span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    opacity: 0.9;
}

/* Poema */
.poem-container {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-sm);
    box-shadow: 0 8px 24px var(--shadow);
    min-height: 350px;
}

.poem-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.poem-author {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.poem-title.hidden,
.poem-author.hidden {
    display: none;
}

.poem-text {
    font-size: clamp(0.95rem, 3.8vw, 1.3rem);
    line-height: 1.8;
    white-space: pre-wrap;
    text-align: center;
    color: var(--text-primary);
    width: 100%;
    cursor: pointer;
}

.poem-text::selection {
    background: var(--accent);
    color: white;
}

/* Valoración */
.rating-section {
    text-align: center;
    padding: var(--spacing-md) var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}

.rating-section.hidden {
    display: none;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.rating-question {
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
    color: var(--text-secondary);
}

.rating-stars {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.star-btn {
    background: none;
    border: none;
    font-size: 2.5rem;
    color: var(--border);
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0.2rem;
}

.star-btn:hover,
.star-btn.hover {
    color: var(--accent);
    transform: scale(1.2);
}

.star-btn.selected {
    color: var(--accent);
}

/* ========================================
   SECCIÓN DE REVELACIÓN CON CUENTA ATRÁS
   ======================================== */

.reveal-section {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 2px solid var(--accent);
    box-shadow: 0 8px 24px var(--shadow);
    animation: fadeInUp 0.5s ease;
}

.reveal-section.hidden {
    display: none;
}

.reveal-message {
    margin-bottom: var(--spacing-lg);
}

.reveal-thanks {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.reveal-thanks strong {
    color: var(--accent);
    font-weight: 600;
}

.reveal-info {
    font-size: 1.3rem;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.reveal-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-style: italic;
}

.reveal-separator {
    font-size: 1rem;
    color: var(--text-secondary);
}

.reveal-author {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-display);
}

/* Cuenta atrás */
.countdown-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.countdown-skip {
    position: relative;
    background: var(--accent);
    /* Fondo marrón para que el texto blanco resalte */
    color: #fff;
    /* Texto blanco/cerca de blanco */
    border: 2px solid var(--accent);
    padding: 0.8rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    box-shadow: 0 4px 12px var(--shadow);
    overflow: hidden;
    min-width: 220px;
}

.countdown-skip::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: var(--progress, 100%);
    background: #5a4632;
    /* Marrón más oscuro para la barra */
    opacity: 0.4;
    /* Más opacidad para que se vea mejor el menguado */
    transition: width 0.1s linear;
    z-index: 1;
}

/* En modo oscuro ajustamos los colores del botón */
body.dark-theme .countdown-skip {
    background: var(--bg-primary);
    color: var(--text-primary);
}

body.dark-theme .countdown-skip::before {
    background: var(--accent);
    opacity: 0.3;
}

.countdown-skip span {
    position: relative;
    z-index: 2;
}

.countdown-skip:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-hover);
    transform: translateY(-2px);
}

#countdownText {
    font-weight: 700;
    min-width: 30px;
}

/* ========================================
   MODAL DE HITO
   ======================================== */

.milestone-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.milestone-modal.hidden {
    display: none;
}

.milestone-content {
    background: var(--bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 16px;
    text-align: center;
    max-width: 500px;
    margin: var(--spacing-lg);
    border: 2px solid var(--accent);
    box-shadow: 0 12px 40px var(--shadow);
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.milestone-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.milestone-title {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: var(--spacing-sm);
}

.milestone-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   ANIMACIONES PARA NOTIFICACIONES
   ======================================== */

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }

    to {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
}

/* ========================================
   RESPONSIVE
   ======================================== */

/* Tablets */
@media (max-width: 768px) {
    .screen {
        padding: var(--spacing-md);
        padding-top: calc(var(--spacing-lg) + 1rem);
    }

    .page-controls {
        gap: 1rem;
        margin-top: var(--spacing-md);
        padding-bottom: var(--spacing-md);
    }

    .theme-toggle,
    .copy-poem-btn {
        width: 44px;
        height: 44px;
    }

    .frequency-options {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-sm);
    }

    .freq-btn {
        padding: var(--spacing-md);
        min-height: 90px;
    }

    .freq-btn .icon {
        font-size: 1.6rem;
    }

    .freq-btn .text {
        font-size: 0.8rem;
    }

    .rating-stars {
        gap: 0.3rem;
    }

    .star-btn {
        font-size: 2rem;
    }

    .poem-container {
        padding: 1rem 0.2rem;
    }

    .poem-text {
        font-size: clamp(0.85rem, 4.3vw, 1.3rem);
    }

    .milestone-indicator {
        font-size: 0.9rem;
    }

    .reveal-author {
        font-size: 1.5rem;
    }

    .reveal-title {
        font-size: 1.3rem;
    }

    .rating-section {
        padding: var(--spacing-sm);
    }
}

/* Móviles */
@media (max-width: 600px) {
    .screen {
        padding-top: calc(var(--spacing-md) + 1rem);
    }

    .frequency-options {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    .freq-btn {
        padding: var(--spacing-md) var(--spacing-xs);
        min-height: 95px;
    }

    .freq-btn .icon {
        font-size: 1.8rem;
    }

    .freq-btn .text {
        font-size: 0.85rem;
    }

    .reveal-section {
        padding: var(--spacing-sm);
    }

    .reveal-message {
        margin-bottom: var(--spacing-md);
    }

    .reveal-thanks {
        font-size: 1rem;
        margin-bottom: var(--spacing-xs);
    }

    .reveal-info {
        gap: 2px;
    }

    .reveal-author {
        font-size: 1.2rem;
    }

    .reveal-title {
        font-size: 1.1rem;
    }

    .countdown-container {
        gap: var(--spacing-sm);
    }

    .countdown-bar-wrapper {
        display: none;
    }

    .countdown-skip {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
        min-width: 180px;
    }
}

/* Móviles muy pequeños */
@media (max-width: 380px) {
    .welcome-form {
        padding: var(--spacing-md);
    }

    .frequency-options {
        gap: var(--spacing-xs);
    }

    .freq-btn {
        padding: var(--spacing-sm) var(--spacing-xs);
        min-height: 90px;
    }

    .freq-btn .icon {
        font-size: 1.5rem;
    }

    .freq-btn .text {
        font-size: 0.7rem;
    }

    .star-btn {
        font-size: 1.8rem;
    }

    .reveal-section {
        padding: var(--spacing-xs);
    }

    .reveal-message {
        margin-bottom: var(--spacing-sm);
    }

    .reveal-thanks {
        font-size: 0.9rem;
    }

    .reveal-author {
        font-size: 1.2rem;
    }

    .reveal-title {
        font-size: 1rem;
    }

    .countdown-bar-wrapper {
        display: none;
    }

    .countdown-skip {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
        min-width: 160px;
    }
}