/* ═══════════════════════════════════════════════════════════
   COMPONENTS.CSS — Premium UI Components v2.0
   EduConnect Hub — Modern Black/Red Theme
═══════════════════════════════════════════════════════════ */

/* ── HERO CARD ───────────────────────────────────────────── */
.hero-card {
    background: var(--grad-hero);
    border: 1px solid var(--red-border);
    border-radius: var(--r-xl);
    padding: 24px 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md), var(--glow-inset);
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(239, 68, 68, .5), transparent);
}

.hero-glow {
    position: absolute;
    background: radial-gradient(circle, rgba(239, 68, 68, .18) 0%, transparent 70%);
    pointer-events: none;
    border-radius: 50%;
    animation: heroGlowPulse 4s ease-in-out infinite;
}

@keyframes heroGlowPulse {

    0%,
    100% {
        opacity: 0.6;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.08);
    }
}

.hero-greet {
    font-size: .65rem;
    font-weight: 700;
    color: var(--red-light);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 5px;
    opacity: 0.85;
}

.hero-name {
    font-size: 1.55rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.15;
    letter-spacing: -0.5px;
}

.hero-meta {
    font-size: .73rem;
    color: var(--text-3);
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.hero-cgpa {
    font-size: 2rem;
    font-weight: 900;
    color: var(--red-light);
    line-height: 1;
    letter-spacing: -1px;
    text-shadow: 0 0 24px rgba(239, 68, 68, .4);
}

.dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .2);
    display: inline-block;
    flex-shrink: 0;
}

/* ── STAT CARDS ──────────────────────────────────────────── */
.stat-card {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 14px 12px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(239, 68, 68, .4), transparent);
}

.stat-card:hover {
    border-color: var(--red-border);
    background: rgba(255, 255, 255, 0.04);
}

.stat-card:active {
    transform: scale(0.97);
}

.stat-card .stat-val {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--red-light);
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.stat-card .stat-lbl {
    font-size: 0.60rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-top: 4px;
}

/* ── STATS GRID ──────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
    gap: 8px;
}

/* ── BUTTONS ─────────────────────────────────────────────── */
button,
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    color: var(--text-3);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    padding: 7px 14px;
    font-family: var(--font);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    letter-spacing: 0.1px;
    transition: var(--transition);
}

button:hover,
.btn:hover {
    background: var(--surface-3);
    border-color: var(--border-hover);
    color: var(--text-2);
}

button:active,
.btn:active {
    transform: scale(0.97);
}

/* Red ghost */
.btn-red,
.btn-green {
    background: var(--red-glow);
    color: var(--red-light);
    border-color: var(--red-border);
}

.btn-red:hover,
.btn-green:hover {
    background: var(--red);
    color: #fff;
    border-color: var(--red);
    box-shadow: var(--shadow-red);
}

/* Solid red */
.btn-solid-red {
    background: var(--grad-red);
    color: #fff;
    border-color: var(--red-dark);
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(239, 68, 68, .20);
}

.btn-solid-red:hover {
    background: linear-gradient(135deg, #DC2626, #B91C1C);
    box-shadow: var(--shadow-red);
}

/* Danger outline */
.btn-danger {
    background: transparent;
    color: var(--red);
    border-color: rgba(239, 68, 68, 0.3);
}

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

/* Active / selected */
.btn-active {
    background: var(--grad-red);
    color: #fff;
    border-color: var(--red-dark);
    font-weight: 600;
    box-shadow: 0 2px 14px rgba(239, 68, 68, 0.32);
}

.btn-active:hover {
    background: linear-gradient(135deg, #DC2626, #B91C1C);
}

/* Ghost outline */
.btn-outline {
    background: transparent;
    border-color: var(--border-hover);
    color: var(--text-3);
}

.btn-outline:hover {
    border-color: var(--border-strong);
    color: var(--text-2);
    background: var(--surface-2);
}

/* Tiny */
.btn-tiny {
    font-size: var(--font-size-xs);
    padding: 4px 10px;
    border-radius: var(--r-sm);
}

/* Pill */
.btn-pill {
    border-radius: var(--r-pill) !important;
    padding: 5px 16px;
}

/* ── INPUTS ──────────────────────────────────────────────── */
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
    background: var(--surface-2);
    color: var(--text);
    border: 1px solid var(--border-hover);
    border-radius: var(--r-md);
    padding: 10px 14px;
    font-family: var(--font);
    font-size: var(--font-size-sm);
    font-weight: 400;
    outline: none;
    width: 100%;
    transition: var(--transition);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--red-border-strong);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.08);
    background: var(--surface-3);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

select option {
    background: var(--surface);
    color: var(--text);
}

textarea {
    resize: vertical;
    min-height: 60px;
}

/* ── T-BOX (card) ────────────────────────────────────────── */
.t-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    margin: 8px 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.t-box-header {
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    padding: 11px 16px;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.t-box-header::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--red);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 8px rgba(239, 68, 68, .5);
}

.t-box-body {
    padding: 14px 16px;
}

.t-box-body.no-pad {
    padding: 0;
}

/* ── CHIP ROW ────────────────────────────────────────────── */
.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 4px 0;
}

/* ── TAGS / BADGES ───────────────────────────────────────── */
.tag {
    display: inline-block;
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    border-radius: var(--r-pill);
    padding: 2px 8px;
    margin-left: 4px;
    white-space: nowrap;
}

.tag-red {
    background: rgba(239, 68, 68, 0.12);
    color: var(--red-light);
    border: 1px solid rgba(239, 68, 68, 0.28);
}

.tag-green {
    background: rgba(34, 197, 94, 0.10);
    color: #86EFAC;
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.tag-yellow {
    background: rgba(234, 179, 8, 0.10);
    color: #FDE047;
    border: 1px solid rgba(234, 179, 8, 0.25);
}

.tag-blue {
    background: rgba(59, 130, 246, 0.10);
    color: #93C5FD;
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.tag-gray {
    background: var(--surface-3);
    color: var(--text-3);
    border: 1px solid var(--border);
}

/* Status badges */
.status-badge {
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    border-radius: var(--r-pill);
    padding: 2px 8px;
    white-space: nowrap;
}

.status-resolved {
    background: rgba(34, 197, 94, 0.10);
    color: #86EFAC;
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.status-pending {
    background: rgba(234, 179, 8, 0.10);
    color: #FDE047;
    border: 1px solid rgba(234, 179, 8, 0.25);
}

.status-reviewing {
    background: var(--surface-3);
    color: var(--text-3);
    border: 1px solid var(--border);
}

/* ── SUBJECT CHIP ────────────────────────────────────────── */
.subject-chip {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 10px 12px;
    cursor: pointer;
    min-width: 90px;
    flex-shrink: 0;
    text-align: center;
    transition: var(--transition);
}

.subject-chip:hover {
    border-color: var(--red-border);
    background: var(--surface-2);
}

.subject-chip:active {
    transform: scale(0.97);
}

/* ── TAB BUTTON ──────────────────────────────────────────── */
.tab-btn {
    border-radius: var(--r-pill) !important;
    padding: 5px 14px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    transition: var(--transition);
}

/* ── COMMENT ITEMS ───────────────────────────────────────── */
.comment-item {
    padding: 13px 16px;
    border-bottom: 1px solid var(--border);
    font-size: var(--font-size-sm);
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: 500;
    margin-bottom: 5px;
}

.comment-author {
    color: var(--text-2);
    font-weight: 600;
}

.comment-text {
    color: var(--text-2);
    line-height: 1.55;
}

/* ── ISSUE ITEMS ─────────────────────────────────────────── */
.issue-item {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: var(--font-size-sm);
}

.issue-item:last-child {
    border-bottom: none;
}

.issue-cat {
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    text-transform: uppercase;
    background: var(--surface-3);
    color: var(--text-3);
    border-radius: var(--r-pill);
    padding: 2px 8px;
    flex-shrink: 0;
    border: 1px solid var(--border);
}

.issue-text {
    flex: 1;
    color: var(--text-2);
}

/* ── SENIOR CARDS ────────────────────────────────────────── */
.senior-card {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.senior-card:last-child {
    border-bottom: none;
}

.senior-handle {
    color: var(--red-light);
    font-weight: 700;
    font-size: var(--font-size-md);
}

.senior-meta {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-left: 6px;
}

.senior-tip {
    color: var(--text-2);
    margin-top: 6px;
    font-size: var(--font-size-sm);
    line-height: 1.55;
    border-left: 2px solid var(--red-border);
    padding-left: 10px;
    font-style: italic;
}

.senior-actions {
    margin-top: 8px;
    display: flex;
    gap: 6px;
}

/* ── NOTE ITEMS ──────────────────────────────────────────── */
.note-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 16px;
    border-bottom: 1px solid var(--border);
    font-size: var(--font-size-sm);
    gap: 10px;
    color: var(--text-2);
}

.note-item:last-child {
    border-bottom: none;
}

.note-title {
    font-weight: 500;
}

.note-by {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-left: 4px;
}

.note-dl {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

/* ── MODULE TREE ─────────────────────────────────────────── */
.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    margin-bottom: 6px;
    cursor: pointer;
    background: var(--surface-2);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-2);
    transition: var(--transition);
}

.module-header:hover {
    background: var(--surface-3);
    border-color: var(--red-border);
    color: var(--red-light);
}

.module-header:active {
    transform: scale(0.98);
}

.module-header .mod-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.module-arrow {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: 400;
    flex-shrink: 0;
    transition: var(--transition);
}

.module-body {
    display: none;
    margin-left: 14px;
    margin-bottom: 10px;
    border-left: 2px solid var(--border);
    padding-left: 14px;
}

.module-body.open {
    display: block;
}

.chapter-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    padding: 7px 0;
    font-size: var(--font-size-sm);
    color: var(--text-3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.chapter-row:last-of-type {
    border-bottom: none;
}

.chapter-row .ch-name {
    flex: 1;
    min-width: 160px;
    color: var(--text-2);
}

.chapter-note {
    padding: 7px 10px;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    background: var(--surface-2);
    border-radius: var(--r-sm);
    margin-top: 4px;
}

.chapter-note .note-label {
    color: #FDE047;
    font-weight: 600;
}

/* ── UPVOTE BTN ──────────────────────────────────────────── */
.upvote-btn {
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--r-pill);
    border: 1px solid var(--red-border);
    color: var(--red-light);
    padding: 2px 10px;
    cursor: pointer;
    background: var(--red-glow);
    white-space: nowrap;
    font-family: var(--font);
    transition: var(--transition);
}

.upvote-btn:hover {
    background: var(--red);
    color: #fff;
    border-color: var(--red);
}

/* ── UPLOAD MSG ──────────────────────────────────────────── */
.upload-msg {
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-top: 8px;
    display: none;
    padding: 8px 12px;
    border-radius: var(--r-sm);
    background: var(--surface-2);
}

/* ── QUEUE ITEM ──────────────────────────────────────────── */
.queue-type-tag {
    font-size: 0.58rem;
    font-weight: 700;
    border-radius: var(--r-pill);
    padding: 2px 8px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    flex-shrink: 0;
    border: 1px solid transparent;
}

.queue-type-red {
    background: rgba(239, 68, 68, 0.15);
    color: var(--red-light);
    border-color: rgba(239, 68, 68, 0.3);
}

.queue-type-green {
    background: rgba(34, 197, 94, 0.10);
    color: #86EFAC;
    border-color: rgba(34, 197, 94, 0.3);
}

.queue-type-yellow {
    background: rgba(234, 179, 8, 0.10);
    color: #FDE047;
    border-color: rgba(234, 179, 8, 0.3);
}

/* ── ANALYTICS TREE ──────────────────────────────────────── */
.analytics-tree {
    font-size: var(--font-size-sm);
    line-height: 2.2;
    color: var(--text-2);
}

.analytics-tree .val {
    color: var(--red-light);
    font-weight: 600;
}

.analytics-tree .warn {
    color: #FDE047;
    font-weight: 600;
}

/* ── PROFILE ROW ─────────────────────────────────────────── */
.profile-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: var(--font-size-sm);
}

.profile-row:last-child {
    border-bottom: none;
}

.profile-key {
    color: var(--text-muted);
    font-weight: 500;
}

.profile-value {
    color: var(--text-2);
    font-weight: 600;
}

/* ── FACULTY SELECTOR PILLS ──────────────────────────────── */
.selector-pill {
    padding: 7px 14px;
    font-size: .74rem;
    font-weight: 600;
    font-family: var(--font);
    border-radius: var(--r-pill);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
}

.selector-pill:hover {
    filter: brightness(1.15);
}

/* ── DRAG-AND-DROP UPLOAD ZONE ───────────────────────────── */
[data-drop-zone].drag-over {
    background: rgba(239, 68, 68, 0.10) !important;
    border-color: var(--red) !important;
    border-style: solid !important;
}

/* ── SUBJECT GRID CARDS v2 ───────────────────────────────── */
.subject-grid-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 16px 14px 14px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.subject-grid-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    border-radius: 2px 2px 0 0;
    background: var(--card-accent, var(--red));
    opacity: 0.7;
    transition: var(--transition);
}

.subject-grid-card:hover {
    border-color: var(--border-hover);
    background: var(--surface-2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.subject-grid-card:hover::before {
    opacity: 1;
}

/* ── MODULE CARDS v2 ─────────────────────────────────────── */
.module-card-v2 {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 16px;
    margin-bottom: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.module-card-v2::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: transparent;
    transition: var(--transition);
}

.module-card-v2:hover {
    border-color: var(--border-hover);
    background: var(--surface-2);
    transform: translateX(3px);
}

.module-card-v2:hover::after {
    background: var(--mod-accent, var(--red));
}

/* ── ANNOUNCEMENT CARD ───────────────────────────────────── */
.ann-card {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    transition: var(--transition);
}

.ann-card:last-child {
    border-bottom: none;
}

.ann-card:hover {
    background: rgba(255, 255, 255, .015);
}

.ann-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 4px;
}

/* ── CTA CARD ────────────────────────────────────────────── */
.cta-card {
    background: linear-gradient(140deg, #160505, #1c0808, #120404);
    border: 1px solid var(--red-border);
    border-radius: var(--r-xl);
    padding: 18px 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 16px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(239, 68, 68, .4), transparent);
}

.cta-card:hover {
    border-color: var(--red-border-strong);
    box-shadow: 0 8px 32px rgba(239, 68, 68, .15);
    transform: translateY(-1px);
}