/* Variables CSS pour les thèmes */
:root {
    /* Light Theme */
    --bg-color: #fff9fc;
    --text-color: #333;
    --header-footer-bg: #ffe6f0;
    --primary-color: #ff69b4;
    --secondary-color: #9370db;
    --accent-color: #87cefa;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --bubble-bg: linear-gradient(135deg, #ffd1dc, #e0bbE4);
    --button-bg: #ff69b4;
    --button-hover-bg: #ff85c2;
    --button-text: white;
    --favorite-bg: #fff0f5;
}

[data-theme="dark"] {
    /* Dark Theme */
    --bg-color: #1e1e2f;
    --text-color: #f0f0f5;
    --header-footer-bg: #2d2d44;
    --primary-color: #ff85c2;
    --secondary-color: #b19cd9;
    --accent-color: #a0d2ff;
    --border-color: #444;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --bubble-bg: linear-gradient(135deg, #3a1c2a, #2a1a3d);
    --button-bg: #9370db;
    --button-hover-bg: #b19cd9;
    --button-text: white;
    --favorite-bg: #2d2d44;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

/* Header & Footer */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    background: var(--header-footer-bg);
    border-radius: 15px;
    padding: 15px 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.site-logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    transition: transform 0.2s;
}

.theme-toggle:hover {
    transform: scale(1.2);
}

.site-footer {
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
    background: var(--header-footer-bg);
    border-radius: 15px;
    padding: 15px 20px;
    box-shadow: 0 -2px 5px var(--shadow-color);
}

.site-footer p {
    margin-bottom: 10px;
}

/* Page Structure */
.page {
    display: none;
    flex-direction: column;
    flex-grow: 1;
}

.page.active {
    display: flex;
}

/* Home Page */
.hero {
    text-align: center;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
}

.hero-title {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--secondary-color);
}

.btn-start {
    padding: 15px 30px;
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

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

/* Generator Page */
.page-title {
    text-align: center;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

/* Mode Selection */
.mode-selection {
    text-align: center;
    margin-bottom: 30px;
}

.mode-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
}

.btn-mode {
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    background: var(--accent-color);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.btn-mode:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.btn-mode-highlighted {
    background: var(--primary-color);
    animation: bounce 1s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* Generator Sections */
.generator-section {
    margin-bottom: 30px;
    padding: 20px;
    border-radius: 15px;
    background: var(--header-footer-bg);
    box-shadow: 0 2px 5px var(--shadow-color);
}

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

/* Forms */
form label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

form input,
form select {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-color);
    color: var(--text-color);
}

form button {
    width: 100%;
}

/* Category Buttons */
.category-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

.btn-category {
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    background: var(--secondary-color);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.btn-category:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px var(--shadow-color);
}

/* Nickname Result */
.nickname-bubble {
    font-size: 2rem;
    font-weight: bold;
    text-align: center;
    padding: 30px 20px;
    margin: 20px 0;
    border-radius: 25px;
    background: var(--bubble-bg);
    color: white;
    box-shadow: 0 4px 15px var(--shadow-color);
    animation: popIn 0.5s ease-out;
    word-break: break-word;
}

@keyframes popIn {
    0% { transform: scale(0.5); opacity: 0; }
    70% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.result-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
}

/* Buttons */
.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 25px;
    background: var(--button-bg);
    color: var(--button-text);
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn:hover {
    background: var(--button-hover-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.btn-secondary {
    background: var(--secondary-color);
}

.btn-secondary:hover {
    background: #a78bda;
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    padding: 5px;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.btn-icon:hover {
     background-color: var(--border-color);
}

/* Favorites Page */
#favorites-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-radius: 15px;
    background: var(--favorite-bg);
    box-shadow: 0 2px 5px var(--shadow-color);
}

.favorite-text {
    font-size: 1.2rem;
    font-weight: bold;
}

.favorite-actions {
    display: flex;
    gap: 10px;
}

.favorite-actions button {
    padding: 8px 12px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

.copy-btn {
    background: var(--accent-color);
    color: white;
}

.copy-btn:hover {
    background: #6bb9f0;
}

.remove-btn {
    background: #ff7f7f;
    color: white;
}

.remove-btn:hover {
    background: #ff6666;
}

/* History Section */
.history-section {
    margin-top: 30px;
    padding: 20px;
    border-radius: 15px;
    background: var(--header-footer-bg);
    box-shadow: 0 2px 5px var(--shadow-color);
}

.history-section h3 {
    margin-bottom: 15px;
    text-align: left;
    color: var(--secondary-color);
}

#history-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 200px;
    overflow-y: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.history-item:last-child {
    border-bottom: none;
}

.history-nickname {
    flex-grow: 1;
    word-break: break-word;
    padding-right: 10px;
}

.history-actions {
    display: flex;
    gap: 5px;
}

.history-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 5px 8px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.history-btn:hover {
    background-color: var(--bg-color);
    transform: scale(1.1);
    box-shadow: 0 2px 4px var(--shadow-color);
}

.history-btn-copy:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.history-btn-delete:hover {
    border-color: #ff7f7f;
    color: #ff7f7f;
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    .site-header {
        padding: 10px 15px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .mode-buttons,
    .category-buttons,
    .result-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn,
    .btn-mode,
    .btn-category {
        width: 100%;
        max-width: 300px;
    }

    .nickname-bubble {
        font-size: 1.5rem;
        padding: 20px 15px;
    }
}