/* --- Color and Font Variables --- */
:root {
    --color-bg: #FFFFFF;
    --color-bg-secondary: #F8F9FA;
    --color-footer-bg: #d8e6f1;
    --color-card-bg: #FFFFFF;
    --color-border: #E2E8F0;
    --color-text-primary: #212529;
    --color-text-secondary: #6c757d;
    --color-accent: #0D6EFD;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --font-heading: 'Sora', sans-serif;
    --font-body: 'Inter', sans-serif;
    /* Lighter Google Colors */
    --google-blue-light: #E8F0FE;
    --google-red-light: #FCE8E6;
    --google-yellow-light: #FFF7E0;
    --google-green-light: #E6F4EA;
    /* Google Colors */
    --google-blue: #4285F4;
    --google-red: #DB4437;
    --google-yellow: #F4B400;
    --google-green: #0F9D58;
}
/* DARK THEME */
body[data-theme="dark"] {
    --color-bg: #1A202C;
    --color-bg-secondary: #111827;
    --color-footer-bg: #111827;
    --color-card-bg: #2D3748;
    --color-border: #4A5568;
    --color-text-primary: #F7FAFC;
    --color-text-secondary: #A0AEC0;
}
/* --- General Styles --- */
* { box-sizing: border-box; }
body { background-color: var(--color-bg); color: var(--color-text-primary); font-family: var(--font-body); margin: 0; transition: background-color 0.3s ease, color 0.3s ease; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 1rem; width: 100%; }
/* --- Header Styles --- */
.site-header { background-color: var(--color-bg); padding: 1rem 0; border-bottom: 1px solid var(--color-border); transition: background-color 0.3s ease, border-color 0.3s ease; }
.site-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700; color: var(--color-text-primary); text-decoration: none; }
.main-nav ul { margin: 0; padding: 0; list-style: none; display: flex; gap: 2rem; }
.main-nav a { color: var(--color-text-secondary); text-decoration: none; font-size: 1rem; font-weight: 500; transition: color 0.2s ease; }
.main-nav a:hover { color: var(--color-accent); }
.header-buttons { display: flex; align-items: center; gap: 0.5rem; }
/* --- Theme Toggle, Sign In/Up Buttons --- */
.theme-toggle { background: none; border: 1px solid transparent; cursor: pointer; padding: 0.5rem; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--color-text-secondary); }
.theme-toggle:hover { color: var(--color-text-primary); }
.theme-toggle svg { width: 20px; height: 20px; }
.moon-icon { display: block; }
.sun-icon { display: none; }
body[data-theme="dark"] .moon-icon { display: none; }
body[data-theme="dark"] .sun-icon { display: block; }
.signin-btn { color: var(--color-text-secondary); background-color: transparent; text-decoration: none; font-weight: 600; padding: 0.6rem 1.2rem; border-radius: 8px; transition: all 0.2s ease; }
.signin-btn:hover { color: var(--color-text-primary); }
.signup-btn { background-color: var(--color-accent); color: white; text-decoration: none; padding: 0.6rem 1.2rem; border-radius: 8px; font-weight: 600; border: 1px solid var(--color-accent); transition: all 0.2s ease; }
.signup-btn:hover { transform: translateY(-2px); }
/* --- Main Content Styles --- */
main { text-align: center; }
h1 { font-family: var(--font-heading); font-size: 3rem; margin-bottom: 1rem; font-weight: 700; }
.hero-section { padding: 6rem 1rem; }
.hero-section p { font-size: 1.2rem; color: var(--color-text-secondary); max-width: 600px; margin: 0 auto 2.5rem auto; }
section { padding: 5rem 1rem; }
.cta-button { background-color: var(--color-accent); color: white; text-decoration: none; border: none; border-radius: 8px; padding: 1rem 2rem; font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: all 0.2s ease; box-shadow: 0 4px 15px -5px var(--color-accent); }
.cta-button:hover { transform: translateY(-3px); box-shadow: 0 7px 25px -5px var(--color-accent); }
h2 { font-family: var(--font-heading); font-size: 2.5rem; margin-top: 0; margin-bottom: 3rem; font-weight: 700; }
.audience-cards { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
.audience-card { border: 1px solid transparent; border-radius: 8px; padding: 1.5rem 2rem; font-size: 1rem; font-weight: 600; cursor: pointer; transition: all 0.2s ease; text-decoration: none; }
#card-beginner { background-color: var(--google-blue-light); color: var(--google-blue); }
#card-beginner:hover { background-color: var(--google-blue); color: white; }
#card-marketer { background-color: var(--google-red-light); color: var(--google-red); }
#card-marketer:hover { background-color: var(--google-red); color: white; }
#card-developer { background-color: var(--google-yellow-light); color: var(--google-yellow); }
#card-developer:hover { background-color: var(--google-yellow); color: white; }
#card-student { background-color: var(--google-green-light); color: var(--google-green); }
#card-student:hover { background-color: var(--google-green); color: white; }
.steps { display: flex; justify-content: center; gap: 2rem; flex-wrap: wrap; max-width: 1000px; margin: 0 auto; text-align: center; }
.step { background-color: var(--color-card-bg); padding: 2rem; border-radius: 12px; flex: 1; min-width: 250px; border: 1px solid var(--color-border); box-shadow: var(--shadow); }

/* --- NEW STYLES for Templates & Learn Pages --- */
.templates-section, .learn-section {
    padding-top: 0;
}
.template-grid, .article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}
.template-card, .article-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    text-align: left;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.template-card:hover, .article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}
.template-card h3, .article-card h3 {
    font-family: var(--font-heading);
    margin-top: 0;
    font-size: 1.3rem;
    color: var(--color-text-primary);
}
.template-card p, .article-card p {
    color: var(--color-text-secondary);
    flex-grow: 1;
    margin-bottom: 1.5rem;
}
.template-card .cta-button {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    align-self: flex-start;
}
/* Styles specific to Article cards */
.article-card {
    font-family: var(--font-body);
    cursor: pointer;
}
.read-more-btn {
    font-weight: 600;
    color: var(--color-accent);
    text-decoration: none;
    align-self: flex-start;
}
/* Article Modal (Pop-up) Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background-color: var(--color-card-bg);
    padding: 2rem 2.5rem;
    border-radius: 12px;
    max-width: 700px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}
.modal-overlay.show .modal-content {
    transform: translateY(0);
}
.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--color-text-secondary);
}
.modal-content h2 {
    margin-top: 0;
    font-size: 2rem;
}
.modal-content p, .modal-content ul {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}
.modal-content h3, .modal-content h4 {
    color: var(--color-text-primary);
}
.modal-content ul {
    padding-left: 20px;
}

/* --- NEW STYLES for Amina & Comparison Sections --- */
.amina-section {
    background-color: var(--color-bg-secondary);
}
.amina-avatar-text {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px dashed var(--color-border);
    color: var(--color-text-secondary);
    font-family: monospace;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    border-radius: 4px;
}
.amina-section p {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}
.comparison-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}
.comparison-box {
    flex: 1;
    min-width: 300px;
    max-width: 450px;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    background-color: var(--color-card-bg);
    box-shadow: var(--shadow);
    text-align: left;
    height: 100%;
}
.comparison-box h3 {
    font-family: var(--font-heading);
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}
.before-box h3 {
    color: var(--google-red);
}
.after-box h3 {
    color: var(--google-green);
}
.comparison-box pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
    background-color: transparent;
    padding: 0;
    margin: 0;
}
.comparison-box pre strong {
    color: var(--color-text-primary);
    font-weight: 600;
}
.comparison-arrow {
    color: var(--color-text-secondary);
}

/* --- AI ENHANCER PAGE STYLES --- */
.enhancer-layout { display: flex; max-width: 1400px; margin: 0 auto; padding: 2rem 1rem; gap: 2rem; }
.enhancer-section { background-color: var(--color-bg); padding: 0; flex-grow: 1; }
.enhancer-header { padding-bottom: 2rem; }
.enhancer-container { display: flex; flex-wrap: wrap; gap: 2rem; text-align: left; }
.enhancer-input, .enhancer-output { flex: 1; min-width: 350px; background-color: var(--color-card-bg); box-shadow: var(--shadow); padding: 2rem; border-radius: 12px; border: 1px solid var(--color-border); }
#user-prompt-input { width: 100%; background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 8px; padding: 1rem; color: var(--color-text-primary); font-size: 1rem; font-family: var(--font-body); margin-bottom: 1.5rem; }
#optimize-btn { width: 100%; }
.result-area { background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 8px; padding: 1rem; min-height: 200px; white-space: pre-wrap; color: var(--color-text-secondary); }
.result-area strong { color: var(--color-text-primary); }
.cta-button.loading { cursor: not-allowed; background-color: #6c757d; }
.prompt-options { display: flex; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.form-group { flex: 1; display: flex; flex-direction: column; min-width: 150px; }
.form-group label { font-size: 0.9rem; font-weight: 600; color: var(--color-text-secondary); margin-bottom: 0.5rem; }
.form-group select { width: 100%; background-color: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: 8px; padding: 0.75rem; color: var(--color-text-primary); font-size: 1rem; font-family: var(--font-body); }
.history-sidebar { flex: 0 0 280px; background-color: var(--color-bg-secondary); border-radius: 12px; padding: 1.5rem; border: 1px solid var(--color-border); align-self: flex-start; display: flex; flex-direction: column; }
.sidebar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; border-bottom: 1px solid var(--color-border); padding-bottom: 1rem; }
.sidebar-header h3 { font-family: var(--font-heading); margin: 0; }
.sidebar-action-btn { background-color: var(--color-bg); border: 1px solid var(--color-border); color: var(--color-text-secondary); padding: 0.5rem 1rem; border-radius: 6px; font-weight: 600; cursor: pointer; transition: all 0.2s ease; }
.sidebar-action-btn:hover { background-color: var(--color-border); color: var(--color-text-primary); }
.sidebar-action-btn.danger { color: #dc3545; }
.sidebar-action-btn.danger:hover { background-color: #dc3545; color: white; border-color: #dc3545; }
#history-list { list-style: none; padding: 0; margin: 0; flex-grow: 1; }
.history-item { display: flex; align-items: center; justify-content: space-between; padding: 0.75rem; border-radius: 6px; margin-bottom: 0.5rem; cursor: pointer; transition: background-color 0.2s ease, color 0.2s ease; }
.history-item:hover { background-color: var(--color-accent); color: white; }
.history-item-title { font-size: 0.9rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-item-menu { position: relative; }
.menu-btn { background: none; border: none; color: inherit; cursor: pointer; padding: 0.25rem; display: none; }
.history-item:hover .menu-btn { display: block; }
.menu-content { display: none; position: absolute; right: 0; top: 25px; background-color: var(--color-card-bg); border: 1px solid var(--color-border); border-radius: 6px; box-shadow: var(--shadow); z-index: 10; padding: 0.5rem 0; }
.menu-content button { background: none; border: none; display: block; width: 100%; padding: 0.5rem 1rem; text-align: left; color: var(--color-text-primary); cursor: pointer; font-size: 0.9rem; }
.menu-content button:hover { background-color: var(--color-bg-secondary); }
.sidebar-footer { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--color-border); }
#clear-history-btn { width: 100%; }
/* --- Wave and Footer Styles --- */
.wave-container { background-color: var(--color-bg); line-height: 0; }
.wave-container svg { fill: var(--color-footer-bg); }
.site-footer { background-color: var(--color-footer-bg); padding: 4rem 1rem 2rem 1rem; text-align: center; }
.footer-links { margin-bottom: 2rem; }
.footer-links a { color: var(--color-text-primary); text-decoration: none; margin: 0 1rem; transition: color 0.2s ease; }
.footer-links a:hover { text-decoration: underline; }
.footer-copy { color: var(--color-text-secondary); font-size: 0.9rem; }
.social-icons { display: flex; justify-content: center; gap: 1.5rem; margin-bottom: 2rem; }
.social-icons a { color: var(--color-text-secondary); transition: all 0.2s ease; }
.social-icons a:hover { color: var(--color-text-primary); transform: translateY(-3px); }
.social-icons svg { width: 24px; height: 24px; }
.footer-counter { margin-top: 2rem; color: var(--color-text-secondary); }
.footer-counter p { margin: 0; }
#visitor-counter { font-weight: 700; color: var(--color-text-primary); }
/* --- NEW: NOTIFICATION POP-UP STYLES --- */
.notification-popup {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--color-text-primary);
    color: var(--color-bg);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.2);
    max-width: 350px;
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 1000;
    /* Hidden by default */
    opacity: 0;
    transform: translateY(20px);
    visibility: hidden;
    transition: all 0.3s ease-in-out;
}
.notification-popup.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}
/* --- Responsive Design --- */
@media (max-width: 1024px) {
    .enhancer-layout { flex-direction: column; }
    .history-sidebar { flex: 0 0 auto; width: 100%; order: 2; }
    .enhancer-section { order: 1; }
}
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .main-nav { display: none; }
    .header-buttons { width: 100%; justify-content: center; margin-top: 1rem; }
    .logo { width: 100%; text-align: center; }
    .footer-links { display: flex; flex-direction: column; gap: 1rem; }
    .comparison-arrow {
        transform: rotate(90deg);
        margin: -1rem 0;
    }
}
.amina-avatar {
    text-align: center;
    margin-bottom: 15px;
}

.amina-logo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.amina-logo:hover {
    transform: scale(1.05);
}

.site-logo-img {
    width: 51px;      /* anciennement 36px */
    height: 51px;     /* anciennement 36px */
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.site-logo-img:hover {
    transform: rotate(5deg) scale(1.08);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 8px; /* léger écart supplémentaire */
}

.logo {
    font-size: 1.6rem; /* tu peux monter à 1.8rem si tu veux harmoniser */
    font-weight: 700;
    text-decoration: none;
    color: inherit;
}