/* ============================================================ */
/* 🎨 style.css — Design Premium & Moderne                      */
/* ============================================================ */

/* --- 1. VARIABLES & RESET --- */
:root {
    --primary: #6366f1;         /* Indigo élégant */
    --primary-hover: #4f46e5;
    --secondary: #ec4899;       /* Rose vif pour les accents */
    --bg-dark: #0f172a;        /* Bleu très sombre */
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --danger: #ef4444;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* --- 2. DÉCORATION DE FOND (Blur) --- */
.bg-blur {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 40%);
}

/* --- 3. LAYOUT PRINCIPAL --- */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.logo h1 span {
    color: var(--primary);
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

/* --- 4. CARTES GLASSMORPHISM --- */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* --- 5. FORMULAIRE --- */
#task-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    gap: 1rem;
    align-items: center;
}

input[type="text"], 
textarea, 
select {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    color: white;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

input[type="text"] { flex: 1; }
textarea { resize: vertical; min-height: 80px; }

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

button[type="submit"] {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 0.75rem;
    padding: 0.8rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

button[type="submit"]:hover {
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* --- 6. LISTE DES TÂCHES --- */
.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 3rem 0 1.5rem;
}

.stats {
    font-size: 0.9rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem 1rem;
    border-radius: 2rem;
}

.tasks-grid {
    display: grid;
    gap: 1.5rem;
}

.task-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: fadeIn 0.5s ease backwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.task-checkbox {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.task-checkbox.checked {
    background: var(--primary);
}

.task-checkbox.checked::after {
    content: "✓";
    color: white;
    font-size: 0.8rem;
}

.task-content {
    flex: 1;
}

.task-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    transition: all 0.3s ease;
}

.task-content.done h3 {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-content p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.badge {
    padding: 0.2rem 0.6rem;
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge.haute { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.badge.moyenne { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.badge.basse { background: rgba(16, 185, 129, 0.2); color: var(--success); }

.delete-btn {
    opacity: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
}

.task-item:hover .delete-btn {
    opacity: 1;
}

.delete-btn:hover {
    color: var(--danger);
    transform: scale(1.2);
}

/* --- 7. RESPONSIVE --- */
@media (max-width: 600px) {
    .input-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .logo h1 { font-size: 2.2rem; }
}