/* =============================================================
   CARDS.CSS — Shared card design system
   Used by: dashboard, practice, onboarding, admin
   =============================================================

   The card vocabulary:
   ┌─────────────────────────────┐
   │ .card                       │ ← base shell (white, shadow, 16px radius)
   │   .card--interactive        │ ← adds hover lift + press
   │   .card--active             │ ← teal left-border + light tint (selected)
   │   .card--teal               │ ← full teal fill (e.g. exam-mode card)
   └─────────────────────────────┘

   Subject card variants:
   ┌─────────────────────────────┐
   │ .subject-card               │ ← grid-fit card (dashboard subjects)
   │   .subject-card--selected   │ ← selected state in practice chooser
   │ .subject-option             │ ← centred flex (practice page picker)
   │   .subject-option--selected │                                          │
   └─────────────────────────────┘

   Mode/option cards (practice page):
   ┌─────────────────────────────┐
   │ .mode-card                  │ ← radio-style option card
   │   .mode-card--selected      │ ← teal left-border selected state
   └─────────────────────────────┘
*/

/* ── Base Card Shell ───────────────────────────────────────────────── */
.card {
    background: var(--white, #fff);
    border-radius: 16px;
    border: 1.5px solid #f1f5f9;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    position: relative;
}

/* ── Interactive Card (hover lift + press) ─────────────────────────── */
.card--interactive {
    cursor: pointer;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
    border-left: 3px solid transparent;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

.card--interactive:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.09);
    border-color: #e2e8f0;
    border-left-color: var(--primary-color);
}

.card--interactive:active {
    transform: translateY(-1px) scale(0.99);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}

/* ── Active / Selected state — teal tint + left accent ────────────── */
.card--active {
    background: #f0fdf9;
    border-color: rgba(var(--primary-rgb), 0.25);
    border-left: 3px solid var(--primary-color);
    box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.12);
}

.card--active:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.18);
}

/* ── Solid teal card (e.g. exam-mode feature card) ─────────────────── */
.card--teal {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 10px 25px rgba(var(--primary-rgb), 0.3);
}

/* ── Card icon pill ────────────────────────────────────────────────── */
/* Coloured rounded square holding an SVG icon                         */
.card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--primary-rgb), 0.10);
    color: var(--primary-color);
    flex-shrink: 0;
    transition: background 0.18s;
}

.card--active .card-icon {
    background: rgba(var(--primary-rgb), 0.18);
}

.card--teal .card-icon {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

/* Larger circular icon variant (practice page) */
.card-icon--circle {
    border-radius: 50%;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
}

/* ─────────────────────────────────────────────────────────────────────
   SUBJECT CARD — grid layout (dashboard .subjects-grid)
   ───────────────────────────────────────────────────────────────────── */
.subject-card {
    background: var(--white, #fff);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-left: 3px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    min-height: 150px;
    cursor: pointer;
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s, background 0.18s;
    text-decoration: none;
    color: inherit;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.subject-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.09);
    border-color: #e2e8f0;
    border-left-color: var(--primary-color);
}

.subject-card:active {
    transform: translateY(-1px) scale(0.99);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}

.subject-card.selected,
.subject-card--selected {
    background: #f0fdf9;
    border-color: rgba(var(--primary-rgb), 0.25);
    border-left-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.12);
}

.subject-card.selected:hover,
.subject-card--selected:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.18);
}

/* Subject card header row */
.subject-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 10px;
}

.subject-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main, #1f2937);
    line-height: 1.3;
    margin: 0;
}

.subject-card__meta {
    font-size: 0.8rem;
    color: var(--text-body, #6b7280);
    margin-bottom: 6px;
}

.subject-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
}

/* ─────────────────────────────────────────────────────────────────────
   SUBJECT OPTION — centred flex (practice page picker, 2-col grid)
   ───────────────────────────────────────────────────────────────────── */
.subject-option {
    background: var(--white, #fff);
    border-radius: 16px;
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    min-height: 140px;
    border: 1.5px solid #f1f5f9;
    border-left: 3px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s, background 0.18s;
    position: relative;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.subject-option:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.09);
    border-color: #e2e8f0;
    border-left-color: var(--primary-color);
}

.subject-option:active {
    transform: translateY(-1px) scale(0.99);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}

.subject-option.selected,
.subject-option--selected {
    background: #f0fdf9;
    border-color: rgba(var(--primary-rgb), 0.25);
    border-left-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.12);
}

.subject-option.selected:hover,
.subject-option--selected:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.18);
}

/* Check circle inside subject-option */
.subject-option .check-circle {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid #d1d5db;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.18s;
    margin-top: 8px;
}

.subject-option.selected .check-circle,
.subject-option--selected .check-circle {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* ─────────────────────────────────────────────────────────────────────
   MODE CARD — radio-style option row (practice page)
   ───────────────────────────────────────────────────────────────────── */
.mode-card {
    background: var(--white, #fff);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: 12px;
    border: 1.5px solid #f1f5f9;
    border-left: 3px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s, background 0.18s;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.mode-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    border-color: #e2e8f0;
    border-left-color: var(--primary-color);
}

.mode-card:active {
    transform: translateY(0) scale(0.99);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.06);
}

.mode-card.selected,
.mode-card--selected {
    background: #f0fdf9;
    border-color: rgba(var(--primary-rgb), 0.25);
    border-left-color: var(--primary-color);
    box-shadow: 0 4px 16px rgba(var(--primary-rgb), 0.12);
}

.mode-card.selected:hover,
.mode-card--selected:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(var(--primary-rgb), 0.18);
}

/* ─────────────────────────────────────────────────────────────────────
   ADMIN MANAGE CARD (dashboard shortcut tiles)
   ───────────────────────────────────────────────────────────────────── */
.manage-card {
    background: var(--white, #fff);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    border: 1.5px solid #f1f5f9;
    border-left: 3px solid transparent;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    user-select: none;
}

.manage-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.09);
    border-color: #e2e8f0;
    border-left-color: var(--primary-color);
}

.manage-card:active {
    transform: translateY(-1px) scale(0.99);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
}