/* ============================================
   VARIABLES Y CONFIGURACIÓN GLOBAL
============================================ */
:root {
    --primary: #FF1744;
    --primary-light: #FF5252;
    --primary-dark: #C51162;
    --secondary: #E91E63;
    --accent: #FF4081;
    --gold: #FFD700;
    --rose: #FFC0CB;
    --dark: #1a0612;
    --dark-transparent: rgba(26, 6, 18, 0.95);
    --light: #FFF5F8;
    --white: #ffffff;
    --gradient-romantic: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-passion: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-sunset: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-love: linear-gradient(135deg, #ff0844 0%, #ffb199 100%);
    --shadow-soft: 0 8px 32px rgba(255, 23, 68, 0.15);
    --shadow-medium: 0 12px 48px rgba(255, 23, 68, 0.25);
    --shadow-strong: 0 20px 60px rgba(255, 23, 68, 0.35);
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background: linear-gradient(135deg, #1a0612 0%, #3d1426 50%, #1a0612 100%);
    background-attachment: fixed;
    color: var(--light);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ============================================
   PARTÍCULAS DE CORAZONES
============================================ */
.hearts-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.floating-heart {
    position: absolute;
    color: var(--accent);
    opacity: 0.6;
    animation: floatUp linear infinite;
    pointer-events: none;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) scale(0) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100px) scale(1.5) rotate(360deg);
        opacity: 0;
    }
}

/* ============================================
   PANTALLA DE BIENVENIDA
============================================ */
.welcome-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: gradientShift 10s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.welcome-content {
    text-align: center;
    animation: fadeInScale 1s ease;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.title-main {
    font-family: 'Great Vibes', cursive;
    font-size: 5rem;
    color: var(--white);
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.5);
    margin-bottom: 2rem;
    animation: pulse 2s ease infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.heart-animation {
    margin: 2rem 0;
}

.heart {
    width: 100px;
    height: 100px;
    background: var(--white);
    position: relative;
    transform: rotate(-45deg);
    animation: heartbeat 1.5s ease infinite;
    margin: 0 auto;
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.5);
}

.heart::before,
.heart::after {
    content: "";
    width: 100px;
    height: 100px;
    background: var(--white);
    border-radius: 50%;
    position: absolute;
}

.heart::before {
    top: -50px;
    left: 0;
}

.heart::after {
    left: 50px;
    top: 0;
}

@keyframes heartbeat {
    0%, 100% { transform: rotate(-45deg) scale(1); }
    25% { transform: rotate(-45deg) scale(1.1); }
    50% { transform: rotate(-45deg) scale(1); }
    75% { transform: rotate(-45deg) scale(1.05); }
}

.subtitle {
    font-family: 'Dancing Script', cursive;
    font-size: 3rem;
    color: var(--white);
    margin: 2rem 0;
}

.welcome-text {
    font-size: 1.5rem;
    margin: 2rem 0;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 300;
}

.btn-start {
    background: var(--white);
    color: var(--primary);
    border: none;
    padding: 1.5rem 3rem;
    font-size: 1.3rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    font-family: 'Montserrat', sans-serif;
}

.btn-start:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.4);
}

/* ============================================
   CONTENEDOR PRINCIPAL
============================================ */
.main-container {
    display: none;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 2;
}

/* ============================================
   HEADER
============================================ */
.header {
    text-align: center;
    padding: 2rem 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    font-family: 'Great Vibes', cursive;
    font-size: 3.5rem;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.date {
    font-size: 1.2rem;
    color: var(--rose);
    font-weight: 300;
}

/* ============================================
   NAVEGACIÓN
============================================ */
.nav-menu {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--light);
    padding: 1rem 2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn span {
    font-size: 1.5rem;
}

.nav-btn:hover,
.nav-btn.active {
    background: var(--gradient-passion);
    border-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

/* ============================================
   SECCIONES
============================================ */
.section {
    display: none;
    animation: fadeIn 0.6s ease;
}

.section.active {
    display: block;
}

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

.section-title {
    font-family: 'Dancing Script', cursive;
    font-size: 3rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   SECCIÓN HOME
============================================ */
.hero {
    text-align: center;
    padding: 3rem 2rem;
}

.hero-title {
    font-family: 'Great Vibes', cursive;
    font-size: 4rem;
    color: var(--white);
    margin-bottom: 3rem;
    text-shadow: 0 0 20px rgba(255, 64, 129, 0.5);
}

.love-counter {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.counter-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem 3rem;
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.counter-item:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-strong);
    background: rgba(255, 255, 255, 0.15);
}

.counter-number {
    font-size: 4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.counter-label {
    font-size: 1.2rem;
    color: var(--rose);
    margin-top: 0.5rem;
    font-weight: 300;
}

.quote-box {
    max-width: 800px;
    margin: 4rem auto;
    padding: 3rem;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border-left: 5px solid var(--accent);
}

.quote {
    font-family: 'Dancing Script', cursive;
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.quote-author {
    text-align: right;
    color: var(--rose);
    font-style: italic;
    font-size: 1.2rem;
}

/* ============================================
   SECCIÓN CARTA
============================================ */
.love-letter {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.letter-envelope {
    position: relative;
    width: 300px;
    height: 200px;
    margin: 2rem auto;
    cursor: pointer;
    transition: all 0.5s ease;
}

.letter-envelope:hover {
    transform: scale(1.05);
}

.envelope-body {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f5576c, #f093fb);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-medium);
}

.envelope-body p {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
}

.envelope-flap {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    border-left: 150px solid transparent;
    border-right: 150px solid transparent;
    border-top: 100px solid #764ba2;
    transform-origin: top;
    transition: all 0.5s ease;
    z-index: 1;
}

.letter-envelope.opened .envelope-flap {
    transform: rotateX(180deg);
}

.letter-content {
    display: none;
    animation: slideDown 0.8s ease;
}

.letter-content.show {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.letter-paper {
    background: rgba(255, 255, 255, 0.95);
    color: var(--dark);
    padding: 3rem;
    border-radius: 10px;
    box-shadow: var(--shadow-strong);
    text-align: left;
    max-width: 700px;
    margin: 2rem auto;
}

.letter-paper h3 {
    font-family: 'Dancing Script', cursive;
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.letter-paper p {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #333;
}

.letter-signature {
    font-family: 'Dancing Script', cursive;
    font-size: 1.8rem !important;
    text-align: right;
    margin-top: 2rem;
}

.letter-signature span {
    color: var(--primary);
    font-size: 2rem;
}

/* ============================================
   GALERÍA
============================================ */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.gallery-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-soft);
}

.gallery-item:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: var(--shadow-strong);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 23, 68, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay span {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 600;
}

/* Modal de fotos */
.photo-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    margin: auto;
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 10px;
    box-shadow: 0 0 50px rgba(255, 64, 129, 0.5);
}

.close-modal {
    position: absolute;
    top: 30px;
    right: 50px;
    font-size: 50px;
    font-weight: bold;
    color: var(--white);
    cursor: pointer;
    z-index: 2001;
}

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

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: none;
    font-size: 3rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.modal-nav:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-50%) scale(1.1);
}

.modal-nav.prev {
    left: 30px;
}

.modal-nav.next {
    right: 30px;
}

/* ============================================
   JUEGOS
============================================ */
.games-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.game-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
    background: rgba(255, 255, 255, 0.15);
}

.game-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
    text-align: center;
}

.game-content {
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.btn-game {
    background: var(--gradient-passion);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.btn-game:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

/* Quiz */
.quiz-question {
    text-align: center;
    margin-bottom: 2rem;
}

.question-text {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--white);
    font-weight: 600;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.quiz-option {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 1rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.quiz-option:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(10px);
}

.quiz-option.correct {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    border-color: #11998e;
}

.quiz-option.incorrect {
    background: linear-gradient(135deg, #eb3349, #f45c43);
    border-color: #eb3349;
}

.quiz-result {
    text-align: center;
    font-size: 1.5rem;
    margin: 1rem 0;
    font-weight: 600;
}

/* Memoria */
.memory-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--rose);
    font-weight: 600;
}

.memory-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.memory-card {
    aspect-ratio: 1;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    transition: all 0.3s ease;
    transform-style: preserve-3d;
}

.memory-card:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-medium);
}

.memory-card.flipped {
    background: var(--gradient-passion);
    border-color: var(--accent);
}

.memory-card.matched {
    background: linear-gradient(135deg, #11998e, #38ef7d);
    border-color: #11998e;
    cursor: default;
    opacity: 0.6;
}

/* Ruleta */
.wheel-container {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 2rem auto;
}

#wheelCanvas {
    border-radius: 50%;
    box-shadow: var(--shadow-strong);
}

.wheel-pointer {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 30px solid var(--gold);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.wheel-result {
    text-align: center;
    font-size: 1.5rem;
    margin: 1.5rem 0;
    min-height: 60px;
    color: var(--gold);
    font-weight: 600;
}

/* Juego de Fechas */
.date-question {
    text-align: center;
    margin-bottom: 2rem;
}

.date-input {
    width: 100%;
    padding: 1rem;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 1.1rem;
    margin-top: 1rem;
}

.date-result {
    text-align: center;
    font-size: 1.3rem;
    margin: 1rem 0;
    min-height: 50px;
    font-weight: 600;
}

/* ============================================
   SORPRESAS
============================================ */
.surprises-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.surprise-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: 20px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.surprise-box:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-strong);
}

.surprise-box h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
    text-align: center;
}

/* Cajas de Recuerdos */
.memory-boxes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.memory-box {
    aspect-ratio: 1;
    perspective: 1000px;
    cursor: pointer;
}

.memory-box .memory-front,
.memory-box .memory-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    transition: transform 0.6s ease;
    padding: 1rem;
    text-align: center;
}

.memory-box .memory-front {
    background: var(--gradient-sunset);
    font-size: 3rem;
    box-shadow: var(--shadow-medium);
}

.memory-box .memory-back {
    background: var(--gradient-romantic);
    transform: rotateY(180deg);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    box-shadow: var(--shadow-medium);
}

.memory-box.revealed .memory-front {
    transform: rotateY(180deg);
}

.memory-box.revealed .memory-back {
    transform: rotateY(0deg);
}

/* Razones de Amor */
.reasons-container {
    text-align: center;
}

.btn-reason {
    background: var(--gradient-love);
    color: var(--white);
    border: none;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.btn-reason:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-strong);
}

.reason-display {
    font-size: 1.5rem;
    color: var(--white);
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    font-style: italic;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

/* Mensaje Secreto */
.secret-message {
    text-align: center;
}

.code-puzzle {
    margin: 2rem 0;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
}

.code-hint {
    font-size: 1rem;
    color: var(--rose);
    margin-bottom: 1rem;
}

.code-text {
    font-size: 3rem;
    margin: 1.5rem 0;
}

.secret-input {
    width: 100%;
    padding: 1rem;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 1.2rem;
    margin: 1rem 0;
    text-align: center;
}

.secret-result {
    font-size: 1.3rem;
    margin-top: 1rem;
    min-height: 50px;
    font-weight: 600;
}

/* Promesas */
.promises-container {
    text-align: center;
}

.btn-promise {
    background: var(--gradient-romantic);
    color: var(--white);
    border: none;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.btn-promise:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-strong);
}

.promise-display {
    font-size: 1.4rem;
    color: var(--white);
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 2rem;
    border-radius: 15px;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   CONTROL DE MÚSICA
============================================ */
.music-control {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 100;
}

#musicBtn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-passion);
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    box-shadow: var(--shadow-strong);
    transition: all 0.3s ease;
}

#musicBtn:hover {
    transform: scale(1.1) rotate(15deg);
}

#musicBtn.playing {
    animation: musicPulse 1s ease infinite;
}

@keyframes musicPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 768px) {
    .title-main {
        font-size: 3rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .love-counter {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .nav-menu {
        flex-direction: column;
    }
    
    .games-container,
    .surprises-container {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .memory-boxes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-nav {
        font-size: 2rem;
        padding: 0.5rem 1rem;
    }
    
    .modal-nav.prev {
        left: 10px;
    }
    
    .modal-nav.next {
        right: 10px;
    }
    
    .close-modal {
        top: 20px;
        right: 20px;
        font-size: 35px;
    }
}