/* Variables CSS pour les thèmes */
:root {
    --bg-gradient-start: #fff5f5;
    --bg-gradient-end: #fff0e6;
    --card-bg: #ffffff;
    --card-shadow: rgba(255, 100, 100, 0.15);
    --text-primary: #4a3232;
    --text-secondary: #7a5a5a;
    --accent-primary: #e85d5d;
    --accent-secondary: #ff8c42;
    --accent-tertiary: #ffc857;
    --btn-primary-bg: linear-gradient(135deg, #e85d5d, #ff8c42);
    --btn-primary-hover: linear-gradient(135deg, #d94545, #e67a30);
    --btn-secondary-bg: #fff5f5;
    --btn-secondary-border: #e85d5d;
    --heart-color: #e85d5d;
}

[data-theme="dark"] {
    --bg-gradient-start: #1a1015;
    --bg-gradient-end: #2a1520;
    --card-bg: #2d1f25;
    --card-shadow: rgba(255, 100, 100, 0.1);
    --text-primary: #f5e6e6;
    --text-secondary: #c9a8a8;
    --accent-primary: #ff6b6b;
    --accent-secondary: #ff9f5a;
    --accent-tertiary: #ffd06a;
    --btn-primary-bg: linear-gradient(135deg, #c94545, #e67530);
    --btn-primary-hover: linear-gradient(135deg, #b53535, #d66520);
    --btn-secondary-bg: #3d2530;
    --btn-secondary-border: #ff6b6b;
    --heart-color: #ff6b6b;
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Lato', sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow-x: hidden;
    opacity: 1;
    transition: background 0.4s ease, color 0.4s ease, opacity 0.3s ease;
}

body.fade-out{
    opacity: 0;
}
/* Container des cœurs animés */
.hearts-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.heart {
    position: absolute;
    bottom: -50px;
    color: var(--heart-color);
    opacity: 0.3;
    animation: floatUp linear infinite;
}

.heart.big {
    bottom: -250px;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.heart.big.visible {
    opacity: 0.5;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        transform: translateY(-110vh) rotate(360deg);
        opacity: 0;
    }
}

/* Bouton de thème */
.theme-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--card-bg);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--card-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 100;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px var(--card-shadow);
}

.icon-moon {
    display: none;
}

[data-theme="light"] .icon-sun {
    display: none;
}

[data-theme="light"] .icon-moon {
    display: block;
}

/* Container principal */
.container {
    max-width: 600px;
    width: 100%;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    z-index: 1;
}
.container2 {
    background: var(--card-bg);
    border-radius: 20px;
    padding-top: 0.5rem;
    padding-left: 2rem;
    padding-right: 2rem;
    padding-bottom: 1.5rem;
    box-shadow: 0 10px 40px var(--card-shadow);
    margin-bottom: 2rem;
    min-height: 150px;
    display: flex;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    align-items: center;
    text-align: center;
    justify-content: top;
    z-index: 1;
}

/* Header */
header {
    margin-bottom: 2.5rem;
}

h1 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    margin-top: 0rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 300;
}
.timer{
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 400;
}
/* Carte de phrase */
.phrase-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    box-shadow: 0 10px 40px var(--card-shadow);
    margin-bottom: 2rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.phrase {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    line-height: 1.6;
    color: var(--text-primary);
    font-style: italic;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.phrase.fade-out {
    opacity: 0;
    transform: translateY(-10px);
}

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

/* Boutons */
.buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.btn {
    font-family: 'Lato', sans-serif;
    font-size: 1.1rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: white;
    box-shadow: 0 4px 15px rgba(232, 93, 93, 0.3);
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(232, 93, 93, 0.4);
}

.btn-secondary {
    background: var(--btn-secondary-bg);
    color: var(--accent-primary);
    border: 2px solid var(--btn-secondary-border);
}

.btn-secondary:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

.btn-secondary.copied {
    background: var(--accent-primary);
    color: white;
}



/* Programme */
h2 {
    font-family: cursive;
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}
.liste {
    list-style: none;
    font-family: cursive;
    line-height: 1.9rem;
    padding: 0;
    margin-top: 0.7rem;
    margin-bottom: 1rem;
    /*font-size: 1rem;*/
    text-align: center;
    color: var(--text-primary);
}

.section-title {
    font-style: italic;
    font-weight: 200;
    font-size: 1rem;
}
.section-txt {
    font-weight: normal;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.programme-details {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

#toast {
    visibility: hidden;
    opacity: 0;
    min-width: flex-content;
    background: var(--btn-secondary-bg);
    background-color: var(--btn-primary-bg);
    color: #fff;
    border: 0.5px solid var(--btn-secondary-border);
    text-align: center;
    border-radius: 50px;
    padding: 15px;
    position: fixed;
    z-index: 3000;
    left: 50%;
    bottom: 40px;
    transform: translateX(-50%);
    font-size: 1rem;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    backdrop-filter: blur(4px);
    cursor: pointer;
}
#toast.show {
    visibility: visible;
    opacity: 1;
}


/* Footer */
footer {
    position: fixed;
    bottom: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    z-index: 1;
}

/* Responsive */
@media (max-width: 600px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .phrase {
        font-size: 1.2rem;
    }
    
    .phrase-card {
        padding: 2rem 1.5rem;
    }
    
    .btn {
        padding: 0.9rem 1.5rem;
        font-size: 1rem;
    }
    
    .theme-toggle {
        top: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }

    .timer {
        font-size: 1.1rem;
    }
}