:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --danger: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 40px 20px;
}

/* Container Principal */
.app-wrapper {
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    border: 1px solid var(--border);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: rgba(30, 41, 59, 0.95);
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
}

.logo i { font-size: 24px; }
.logo h1 { font-size: 20px; font-weight: 600; color: #fff; }
.logo span { color: var(--primary); }

/* Boutons Header */
.actions { display: flex; gap: 10px; }
#file-input { display: none; }

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: 0.3s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Main Content */
main { padding: 30px; }

/* Date Control */
.date-controls {
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}
.date-controls label { color: var(--text-muted); font-size: 14px; }
input[type="date"] {
    background: var(--bg-color);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 8px 12px;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    outline: none;
}

/* Zone d'ajout (Barre principale) */
.add-task-container {
    display: flex;
    gap: 15px;
    background: var(--bg-color);
    padding: 10px;
    border-radius: 12px;
    border: 1px solid var(--border);
    margin-bottom: 40px;
}

.input-group {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    padding: 0 15px;
    border-radius: 8px;
    border: 1px solid transparent;
}

.input-group:focus-within { border-color: var(--primary); }
.input-group i { color: var(--text-muted); margin-right: 10px; }

input {
    background: transparent;
    border: none;
    color: #fff;
    padding: 12px 0;
    font-size: 15px;
    outline: none;
}

.time-group input { width: 110px; } /* Pour l'heure */
.text-group { flex: 1; }
.text-group input { width: 100%; }

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0 25px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: 0.2s;
}

.btn-primary:hover { background: var(--primary-hover); }

/* Liste */
h3 {
    color: var(--text-main);
    font-size: 18px;
    margin-bottom: 20px;
    border-left: 4px solid var(--primary);
    padding-left: 10px;
}

ul li {
    list-style: none;
    background: var(--bg-color);
    margin-bottom: 12px;
    padding: 15px 20px;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid transparent;
    transition: 0.2s;
}

ul li:hover {
    border-color: var(--border);
    transform: translateY(-2px);
}

.task-info { display: flex; align-items: center; gap: 20px; }

.time-tag {
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
    padding: 5px 10px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    font-variant-numeric: tabular-nums;
}

.task-desc { font-size: 16px; }

.delete-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 18px;
    padding: 5px;
    border-radius: 5px;
    transition: 0.2s;
}

.delete-btn:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* Responsive Mobile */
@media (max-width: 600px) {
    .add-task-container { flex-direction: column; background: transparent; border: none; padding: 0; }
    .input-group { padding: 5px 15px; border: 1px solid var(--border); }
    .btn-primary { padding: 15px; justify-content: center; }
}