/* ==============================================
   attendance.css  —  place in:  css/attendance.css
   ============================================== */

/* ── Attendance tab nav ───────────────────────────────────── */
.att-tabs {
    display: flex;
    gap: .6rem;
    margin-bottom: 2rem;
    background: rgba(10,25,47,.5);
    border-radius: var(--r-lg);
    padding: 6px;
    width: fit-content;
}
.att-tab {
    display: flex; align-items: center; gap: 8px;
    padding: .7rem 1.5rem;
    border: none; border-radius: var(--r-md);
    background: none; color: var(--text-muted);
    font-family: 'Inter', sans-serif; font-size: .95rem; font-weight: 600;
    cursor: pointer; transition: var(--ease);
}
.att-tab:hover  { color: var(--text-primary); background: rgba(42,250,223,.08); }
.att-tab.active { background: var(--grad-main); color: #fff; }

/* ── Pane ─────────────────────────────────────────────────── */
.att-pane { animation: fadeIn .2s ease; }
@keyframes fadeIn { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:translateY(0); } }

/* ── Date row ─────────────────────────────────────────────── */
.att-date-row {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 1rem;
    margin-bottom: 1.5rem;
}
.att-date-wrap {
    display: flex; align-items: center; gap: .7rem;
    background: rgba(22,33,62,.7);
    border: 1px solid rgba(42,250,223,.15);
    border-radius: var(--r-md); padding: .7rem 1.2rem;
}
.att-date-wrap i { color: var(--accent-teal); }
.att-date-input {
    background: none; border: none; outline: none;
    color: var(--text-primary); font-family: 'Inter', sans-serif;
    font-size: 1rem; font-weight: 600;
    color-scheme: dark;
}
.att-quick-actions { display: flex; gap: .6rem; }
.btn-quick {
    display: flex; align-items: center; gap: 6px;
    padding: .65rem 1.1rem; border-radius: var(--r-md);
    border: 1px solid; font-family: 'Inter', sans-serif;
    font-size: .88rem; font-weight: 600; cursor: pointer;
    transition: var(--ease);
}
.btn-quick.present {
    background: rgba(42,250,223,.08); border-color: rgba(42,250,223,.25);
    color: var(--accent-teal);
}
.btn-quick.present:hover { background: rgba(42,250,223,.18); }
.btn-quick.absent  {
    background: rgba(255,68,68,.08); border-color: rgba(255,68,68,.25);
    color: #ff6b6b;
}
.btn-quick.absent:hover  { background: rgba(255,68,68,.18); }

/* ── Day stats ────────────────────────────────────────────── */
.att-day-stats {
    display: grid; grid-template-columns: repeat(4,1fr);
    gap: .8rem; margin-bottom: 1.5rem;
}
.att-day-stat {
    background: rgba(22,33,62,.6);
    border: 1px solid rgba(42,250,223,.1);
    border-radius: var(--r-md); padding: 1rem;
    text-align: center; transition: var(--ease);
}
.att-day-stat:hover { transform: translateY(-2px); }
.att-day-num { display: block; font-family: 'Poppins', sans-serif; font-size: 1.8rem; font-weight: 700; }
.att-day-lbl { display: block; font-size: .72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; margin-top: .2rem; }
.present-stat .att-day-num { color: var(--accent-teal); }
.late-stat    .att-day-num { color: var(--accent-amber); }
.absent-stat  .att-day-num { color: var(--accent-red); }
.total-stat   .att-day-num { color: var(--accent-blue); }
.present-stat { border-color: rgba(42,250,223,.2); }
.late-stat    { border-color: rgba(255,154,60,.2); }
.absent-stat  { border-color: rgba(255,68,68,.2); }
.total-stat   { border-color: rgba(79,195,247,.2); }

/* ── Attendance list ──────────────────────────────────────── */
.att-list { display: flex; flex-direction: column; gap: .6rem; margin-bottom: 1.5rem; }

.att-row {
    display: flex; align-items: center; gap: 1rem;
    background: rgba(22,33,62,.6);
    border: 1px solid rgba(42,250,223,.08);
    border-radius: var(--r-md); padding: .9rem 1.2rem;
    transition: var(--ease);
}
.att-row:hover { border-color: rgba(42,250,223,.2); }
.att-row[data-status="present"] { border-color: rgba(42,250,223,.25); background: rgba(42,250,223,.04); }
.att-row[data-status="late"]    { border-color: rgba(255,154,60,.25); background: rgba(255,154,60,.04); }
.att-row[data-status="absent"]  { border-color: rgba(255,68,68,.25);  background: rgba(255,68,68,.04); }

.att-avatar {
    width: 44px; height: 44px; border-radius: 50%;
    object-fit: cover; border: 2px solid rgba(42,250,223,.25); flex-shrink: 0;
}
.att-avatar-placeholder {
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--grad-main);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.att-student-info { flex: 1; min-width: 0; }
.att-student-name { font-weight: 600; font-size: .95rem; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.att-student-roll { font-size: .78rem; color: var(--text-muted); margin-top: 2px; }

.att-status-btns { display: flex; gap: .4rem; flex-shrink: 0; }
.att-status-btn {
    display: flex; align-items: center; gap: 5px;
    padding: .45rem .9rem; border-radius: 8px;
    border: 1px solid rgba(136,146,176,.2);
    background: rgba(136,146,176,.06);
    color: var(--text-muted);
    font-family: 'Inter', sans-serif; font-size: .8rem; font-weight: 600;
    cursor: pointer; transition: var(--ease);
}
.att-status-btn.btn-present.active { background: rgba(42,250,223,.15); border-color: var(--accent-teal); color: var(--accent-teal); }
.att-status-btn.btn-late.active    { background: rgba(255,154,60,.15);  border-color: var(--accent-amber); color: var(--accent-amber); }
.att-status-btn.btn-absent.active  { background: rgba(255,68,68,.15);   border-color: var(--accent-red);   color: #ff6b6b; }
.att-status-btn:hover { opacity: .8; }

/* ── Save row ─────────────────────────────────────────────── */
.att-save-row {
    display: flex; justify-content: flex-end;
    padding-top: 1rem;
    border-top: 1px solid rgba(42,250,223,.08);
}
.btn-save-att {
    display: flex; align-items: center; gap: 8px;
    padding: .9rem 2rem; background: var(--grad-main);
    border: none; border-radius: var(--r-md); color: #fff;
    font-family: 'Inter', sans-serif; font-size: 1rem; font-weight: 700;
    cursor: pointer; transition: var(--ease);
}
.btn-save-att:hover { transform: translateY(-2px); box-shadow: var(--glow); }

/* ── Summary grid ─────────────────────────────────────────── */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.4rem;
}

/* ── Summary card ─────────────────────────────────────────── */
.summary-card {
    background: rgba(22,33,62,.7);
    border: 1px solid rgba(42,250,223,.1);
    border-radius: var(--r-lg); padding: 1.4rem;
    backdrop-filter: blur(10px); transition: var(--ease);
    position: relative; overflow: hidden;
}
.summary-card::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 100%; height: 3px; background: var(--grad-main);
}
.summary-card:hover { transform: translateY(-4px); border-color: rgba(42,250,223,.28); box-shadow: var(--glow); }
.summary-card.low-att { border-color: rgba(255,68,68,.3); }
.summary-card.low-att::before { background: var(--grad-red); }
.summary-card.low-att:hover   { box-shadow: var(--glow-red); }

.summary-top {
    display: flex; align-items: center; gap: .9rem;
    margin-bottom: 1rem;
}
.summary-avatar {
    width: 52px; height: 52px; border-radius: 50%;
    object-fit: cover; border: 2px solid rgba(42,250,223,.25); flex-shrink: 0;
}
.summary-avatar-placeholder {
    width: 52px; height: 52px; border-radius: 50%;
    background: var(--grad-main);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; font-weight: 700; color: #fff; flex-shrink: 0;
}
.summary-name { font-family: 'Poppins', sans-serif; font-weight: 700; font-size: 1rem; color: var(--text-primary); }
.summary-roll { font-size: .78rem; color: var(--accent-teal); margin-top: 2px; }

/* ── Low attendance badge ─────────────────────────────────── */
.low-att-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: .3rem .8rem; margin-bottom: .9rem;
    background: rgba(255,68,68,.12); border: 1px solid rgba(255,68,68,.3);
    border-radius: 20px; color: #ff6b6b; font-size: .75rem; font-weight: 700;
}

/* ── Percentage ring ──────────────────────────────────────── */
.summary-pct-row {
    display: flex; align-items: center; gap: 1.2rem;
    margin-bottom: 1rem;
}
.pct-ring-wrap { position: relative; width: 64px; height: 64px; flex-shrink: 0; }
.pct-ring-wrap svg { transform: rotate(-90deg); }
.pct-ring-bg  { fill: none; stroke: rgba(42,250,223,.08); stroke-width: 5; }
.pct-ring-fg  { fill: none; stroke-width: 5; stroke-linecap: round; transition: stroke-dashoffset .8s ease; }
.pct-ring-fg.high { stroke: var(--accent-teal); }
.pct-ring-fg.mid  { stroke: var(--accent-amber); }
.pct-ring-fg.low  { stroke: var(--accent-red); }
.pct-ring-text {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    font-family: 'Poppins', sans-serif; font-size: .82rem; font-weight: 800;
    color: var(--text-primary);
}
.pct-ring-na  { font-size: .65rem; color: var(--text-muted); }

/* ── Count rows ───────────────────────────────────────────── */
.summary-counts { flex: 1; display: flex; flex-direction: column; gap: .25rem; }
.sc-row {
    display: flex; align-items: center; justify-content: space-between;
    font-size: .82rem;
}
.sc-label { color: var(--text-muted); display: flex; align-items: center; gap: .4rem; }
.sc-val   { font-weight: 700; color: var(--text-primary); }
.sc-dot   { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.sc-dot.present { background: var(--accent-teal); }
.sc-dot.late    { background: var(--accent-amber); }
.sc-dot.absent  { background: var(--accent-red); }

/* ── Progress bar ─────────────────────────────────────────── */
.summary-progress-wrap {
    height: 5px; background: rgba(42,250,223,.07);
    border-radius: 10px; overflow: hidden; margin-bottom: 1rem;
}
.summary-progress-bar {
    height: 100%; border-radius: 10px;
    transition: width .8s ease;
    background: var(--accent-teal);
}
.summary-progress-bar.high { background: var(--accent-teal); }
.summary-progress-bar.mid  { background: var(--accent-amber); }
.summary-progress-bar.low  { background: var(--accent-red); }

/* ── History button ───────────────────────────────────────── */
.btn-history {
    width: 100%; padding: .65rem;
    background: rgba(42,250,223,.06);
    border: 1px solid rgba(42,250,223,.15);
    border-radius: var(--r-md); color: var(--accent-teal);
    font-family: 'Inter', sans-serif; font-size: .85rem; font-weight: 600;
    cursor: pointer; transition: var(--ease);
    display: flex; align-items: center; justify-content: center; gap: 7px;
}
.btn-history:hover { background: rgba(42,250,223,.14); border-color: rgba(42,250,223,.35); }

/* ── History modal ────────────────────────────────────────── */
.history-modal { max-width: 460px; }
.history-content {
    max-height: 340px; overflow-y: auto;
    display: flex; flex-direction: column; gap: .4rem;
    padding-right: .3rem;
}
.history-content::-webkit-scrollbar       { width: 5px; }
.history-content::-webkit-scrollbar-track { background: rgba(10,25,47,.4); border-radius: 10px; }
.history-content::-webkit-scrollbar-thumb { background: rgba(42,250,223,.2); border-radius: 10px; }

.hist-row {
    display: flex; align-items: center; justify-content: space-between;
    padding: .55rem .8rem;
    background: rgba(10,25,47,.5);
    border-radius: 8px; border: 1px solid rgba(42,250,223,.06);
}
.hist-date   { font-size: .85rem; color: var(--text-secondary); }
.hist-status { font-size: .75rem; font-weight: 700; padding: 2px 10px; border-radius: 20px; }
.hist-status.present { background: rgba(42,250,223,.12); color: var(--accent-teal);  border: 1px solid rgba(42,250,223,.3); }
.hist-status.late    { background: rgba(255,154,60,.12); color: var(--accent-amber); border: 1px solid rgba(255,154,60,.3); }
.hist-status.absent  { background: rgba(255,68,68,.12);  color: #ff6b6b;             border: 1px solid rgba(255,68,68,.3); }
.hist-empty  { text-align: center; padding: 2rem; color: var(--text-muted); font-size: .9rem; }

/* ── Active nav link — colored text only, no background ───── */
.nav-active {
    background: none !important;
    border-radius: var(--r-md);
}
a.nav-active[href="students.html"]    { color: var(--accent-purple) !important; }
a.nav-active[href="attendance.html"]  { color: var(--accent-red)   !important; }
a.nav-active[href="submissions.html"] { color: var(--accent-blue)   !important; }
a.nav-active[href="marks.html"]       { color: var(--accent-amber)  !important; }
a.nav-active[href="highlights.html"]  { color: var(--accent-gold)   !important; }

/* ── Hamburger button ─────────────────────────────────────── */
.nav-hamburger {
    display: none;
    flex-direction: column; justify-content: center; align-items: center;
    gap: 5px; width: 40px; height: 40px;
    background: none; border: 1px solid rgba(42,250,223,.2);
    border-radius: var(--r-md); cursor: pointer;
    transition: var(--ease); padding: 0; flex-shrink: 0;
}
.nav-hamburger:hover { border-color: var(--accent-teal); background: rgba(42,250,223,.08); }
.nav-hamburger span {
    display: block; width: 18px; height: 2px;
    background: var(--text-secondary);
    border-radius: 2px; transition: var(--ease);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── User area — always horizontal ───────────────────────── */
#navUserArea { display: flex; align-items: center; gap: .6rem; }

/* ── Mobile nav panel ─────────────────────────────────────── */
@media (max-width: 900px) {
    .nav-hamburger { display: flex; }

    .nav-links {
        display: none;
        position: absolute; top: 100%; left: 0; right: 0;
        flex-direction: column; align-items: stretch;
        background: rgba(10,25,47,.97);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(42,250,223,.12);
        padding: .8rem; gap: .25rem; z-index: 999;
    }
    .nav-links.open {
        display: flex;
        animation: navSlideDown .2s ease both;
    }
    @keyframes navSlideDown {
        from { opacity: 0; transform: translateY(-6px); }
        to   { opacity: 1; transform: translateY(0); }
    }
    .nav-links .nav-link-btn { width: 100%; justify-content: flex-start; padding: .7rem 1rem; border-radius: var(--r-md); }
    .nav-links #navUserArea {
        display: flex; flex-direction: row; align-items: center;
        gap: .6rem; flex-wrap: nowrap;
        padding-top: .6rem; border-top: 1px solid rgba(42,250,223,.08); margin-top: .3rem;
    }
    .nav-links #navUserArea .nav-link-btn { flex: 1; justify-content: center; }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
    .att-day-stats    { grid-template-columns: repeat(2,1fr); }
    .att-status-btns  { flex-direction: column; gap: .3rem; }
    .att-status-btn   { font-size: .75rem; padding: .35rem .6rem; }
    .summary-grid     { grid-template-columns: 1fr; }
    .att-quick-actions { flex-direction: column; }
    .att-date-row     { flex-direction: column; align-items: flex-start; }
    .att-tabs         { width: 100%; }
    .att-tab          { flex: 1; justify-content: center; }
}
@media (max-width: 480px) {
    .att-row          { flex-wrap: wrap; }
    .att-status-btns  { flex-direction: row; width: 100%; }
    .att-status-btn   { flex: 1; justify-content: center; }
    .att-day-stats    { grid-template-columns: repeat(2,1fr); }
}