/* =============================================================
   مكوّن البطاقات - One Teacher Platform
   ============================================================= */

/* ===== Base Card ===== */
.card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.card:hover {
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow), var(--shadow-glow);
    transform: translateY(-4px);
}

/* ===== Card Sections ===== */
.card-header {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.card-header h2,
.card-header h3,
.card-header h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 0;
}

.card-header h2 i,
.card-header h3 i,
.card-header h4 i { color: var(--color-primary); }

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ===== Card Variants ===== */

/* داكن زجاجي */
.card-glass {
    background: rgba(var(--color-primary-rgb), 0.04);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* مع حد لوني */
.card-primary { border-top: 3px solid var(--color-primary); }
.card-success { border-top: 3px solid var(--color-success); }
.card-danger  { border-top: 3px solid var(--color-danger); }
.card-warning { border-top: 3px solid var(--color-warning); }
.card-accent  { border-top: 3px solid var(--color-accent); }

/* إحصاء/metric */
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.stat-card:hover::before { transform: scaleX(1); }

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--border-color-hover);
}

.stat-icon {
    width: 55px;
    height: 55px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.stat-icon-primary { background: rgba(var(--color-primary-rgb), 0.15); color: var(--color-primary); }
.stat-icon-success { background: rgba(var(--color-success-rgb), 0.15); color: var(--color-success); }
.stat-icon-danger  { background: rgba(var(--color-danger-rgb), 0.15);  color: var(--color-danger); }
.stat-icon-warning { background: rgba(var(--color-warning-rgb), 0.15); color: var(--color-warning); }

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-text-light);
    line-height: 1;
    margin-bottom: 0.4rem;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

.stat-change {
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: 0.5rem;
    padding: 0.2rem 0.5rem;
    border-radius: var(--border-radius-sm);
}

.stat-change.up   { background: rgba(var(--color-success-rgb), 0.15); color: var(--color-success); }
.stat-change.down { background: rgba(var(--color-danger-rgb), 0.15);  color: var(--color-danger); }

/* ===== Info Card ===== */
.info-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.2rem 1.4rem;
    background: rgba(var(--color-primary-rgb), 0.06);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.info-card-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--border-radius-sm);
    background: rgba(var(--color-primary-rgb), 0.15);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.1rem;
}

/* ===== Alert Card ===== */
.alert-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 1.3rem;
    border-radius: var(--border-radius);
    border: 1px solid;
}

.alert-card.alert-success { 
    background: rgba(var(--color-success-rgb), 0.08); 
    border-color: rgba(var(--color-success-rgb), 0.3);
    color: var(--color-success); 
}
.alert-card.alert-danger  { 
    background: rgba(var(--color-danger-rgb), 0.08); 
    border-color: rgba(var(--color-danger-rgb), 0.3);
    color: var(--color-danger); 
}
.alert-card.alert-warning { 
    background: rgba(var(--color-warning-rgb), 0.08); 
    border-color: rgba(var(--color-warning-rgb), 0.3);
    color: var(--color-warning); 
}
.alert-card.alert-info    { 
    background: rgba(var(--color-primary-rgb), 0.08); 
    border-color: rgba(var(--color-primary-rgb), 0.3);
    color: var(--color-primary); 
}

.alert-card i { font-size: 1.2rem; flex-shrink: 0; margin-top: 0.1rem; }

/* ===== Grid Cards ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.cards-grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
}