/* STATS */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; margin-bottom: 1.25rem; }
.stat { background: var(--surface); border-radius: var(--radius-lg); padding: 14px 18px; border: 0.5px solid var(--border); }
.stat-label { font-size: 12px; color: var(--text2); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }
.stat-val { font-size: 28px; font-weight: 600; line-height: 1; letter-spacing: -0.01em; }

/* TABS */
.tab-bar { display: flex; gap: 5px; flex-wrap: wrap; margin-bottom: 1rem; }
.tab { padding: 5px 14px; border-radius: 20px; border: 0.5px solid var(--border); background: var(--surface); color: var(--text2); cursor: pointer; font-size: 13px; font-family: 'DM Sans', sans-serif; transition: all 0.12s; }
.tab:hover { background: var(--surface2); color: var(--text); }
.tab.active { background: var(--text); color: #fff; border-color: var(--text); }

/* STUDENT GRID */
.student-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 10px; }
.chip { border-radius: var(--radius-lg); border: 0.5px solid var(--border); padding: 0; cursor: pointer; user-select: none; background: var(--surface); transition: transform 0.1s; overflow: hidden; }
.chip:active { transform: scale(0.97); }
.chip-meta { font-size: 12px; color: var(--text3); font-family: 'DM Mono', monospace; margin-top: 4px; }
.chip-badge { font-size: 12px; font-weight: 500; margin-top: 8px; padding: 3px 9px; border-radius: 20px; display: inline-block; }
.chip-inner { display: flex; flex-direction: column; padding: 8px 10px 6px 10px; gap: 3px; min-height: 0; }
.chip-fname { font-size: 19px; font-weight: 700; color: var(--text); line-height: 1.15; word-break: break-word; }
.chip-lname { font-size: 16px; font-weight: 400; color: var(--text); line-height: 1.15; word-break: break-word; opacity: 0.7; }
.chip-icon-row { display: flex; align-items: center; justify-content: space-around; margin-top: auto; padding-top: 6px; border-top: 0.5px solid var(--border); }

/* CHIP STATUS VARIANTS */
.chip.s-out { border-color: var(--red-border); background: var(--red-bg); }
.chip.s-out .chip-badge { background: var(--red-border); color: #fff; }
.chip.s-out .chip-fname, .chip.s-out .chip-lname { color: var(--red-text); }
.chip.s-late { border-color: var(--amber-border); background: var(--amber-bg); }
.chip.s-late .chip-badge { background: var(--amber-border); color: #fff; }
.chip.s-late .chip-fname, .chip.s-late .chip-lname { color: var(--amber-text); }
.chip.s-prep { border-color: #16a34a; background: #f0fdf4; }
.chip.s-prep .chip-fname, .chip.s-prep .chip-lname { color: #15803d; }

/* CHIP ICONS */
.chip-icon { background: none; border: none; cursor: pointer; padding: 0 3px; line-height: 1; font-size: 24px; opacity: 0.2; transition: opacity 0.15s, transform 0.1s, filter 0.1s; -webkit-tap-highlight-color: transparent; filter: grayscale(1); display: flex; flex-direction: column; align-items: center; gap: 1px; }
.chip-icon:active { transform: scale(0.85); }
.chip-icon.active { opacity: 1; filter: none; }

/* SETTINGS LAYOUT */
.settings-layout { display: flex; gap: 16px; padding: 1rem 0; align-items: flex-start; }
.settings-nav { width: 180px; flex-shrink: 0; background: var(--surface2); border-radius: var(--radius-lg); border: 0.5px solid var(--border); overflow: hidden; }
.settings-nav-title { font-size: 10px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text3); padding: 14px 16px 8px; }
.settings-nav-item { display: block; width: 100%; text-align: left; padding: 10px 16px; font-size: 13px; font-weight: 500; color: var(--text2); background: none; border: none; border-left: 2.5px solid transparent; cursor: pointer; font-family: 'DM Sans', sans-serif; transition: all 0.12s; }
.settings-nav-item:hover { color: var(--text); background: var(--surface3); }
.settings-nav-item.active { color: var(--text); background: var(--surface); font-weight: 600; border-left-color: #e84040; }
.settings-content { flex: 1; min-width: 0; }
.settings-card { background: var(--surface); border: 0.5px solid var(--border); border-radius: var(--radius-lg); padding: 24px 28px; }
.settings-card-title { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 4px; letter-spacing: -0.01em; }
.settings-card-sub { font-size: 13px; color: var(--text3); margin-bottom: 20px; }
.settings-section { display: none; }
.settings-section.active { display: block; }
.settings-field { margin-bottom: 16px; }
.settings-field label { font-size: 13px; font-weight: 600; color: var(--text); display: block; margin-bottom: 5px; }
.settings-field .hint { font-size: 12px; color: var(--text3); margin-top: 4px; }
.settings-field input, .settings-field select { width: 100%; padding: 8px 12px; border: 0.5px solid var(--border2); border-radius: var(--radius); background: var(--surface2); color: var(--text); font-size: 14px; font-family: 'DM Sans', sans-serif; height: 38px; }
.settings-field input:focus, .settings-field select:focus { outline: 2px solid var(--text); outline-offset: 1px; }
.settings-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.settings-save-bar { margin-top: 20px; padding-top: 16px; border-top: 0.5px solid var(--border); }
@media (max-width: 700px) { .settings-layout { flex-direction: column; } .settings-nav { width: 100%; } .settings-row { grid-template-columns: 1fr; } }

/* ADD PANEL */
.add-panel { background: var(--surface2); border-radius: var(--radius-lg); padding: 14px 16px; margin-bottom: 1rem; display: none; gap: 10px; flex-wrap: wrap; align-items: flex-end; border: 0.5px solid var(--border); }
.add-panel.open { display: flex; }
.add-panel label { font-size: 11px; color: var(--text2); display: block; margin-bottom: 3px; text-transform: uppercase; letter-spacing: 0.04em; }

/* MODAL OVERLAY */
.overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.45); z-index: 100; display: none; align-items: center; justify-content: center; padding: 1rem; }
.overlay.open { display: flex; }
.modal { background: var(--surface); border-radius: var(--radius-lg); padding: 1.5rem; width: 100%; max-width: 520px; max-height: 85vh; overflow-y: auto; border: 0.5px solid var(--border2); }
.modal-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 1.25rem; }
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--text2); font-size: 20px; padding: 0; line-height: 1; }
.modal-close:hover { color: var(--text); }

/* HISTORY / LOG */
.log-entry { display: flex; align-items: center; gap: 10px; padding: 7px 0; border-bottom: 0.5px solid var(--border); font-size: 13px; }
.log-date { color: var(--text2); min-width: 95px; font-family: 'DM Mono', monospace; font-size: 12px; }
.badge { font-size: 11px; font-weight: 500; padding: 2px 8px; border-radius: 20px; }
.badge-out { background: var(--red-bg); color: var(--red-text); }
.badge-late { background: var(--amber-bg); color: var(--amber-text); }
.badge-in { background: var(--green-bg); color: var(--green-text); }

/* TREND BARS */
.trend-row { display: flex; align-items: center; gap: 10px; padding: 6px 0; border-bottom: 0.5px solid var(--border); }
.trend-name { font-size: 13px; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.trend-bar-wrap { width: 120px; height: 8px; background: var(--surface2); border-radius: 4px; overflow: hidden; }
.trend-bar { height: 100%; border-radius: 4px; background: var(--red-border); }
.trend-count { font-size: 12px; color: var(--text2); min-width: 30px; text-align: right; font-family: 'DM Mono', monospace; }

/* CLASS SUMMARY CARDS */
.class-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; margin-bottom: 1.5rem; }
.class-card { background: var(--surface); border-radius: var(--radius-lg); border: 0.5px solid var(--border); padding: 12px 14px; cursor: pointer; transition: border-color 0.15s; }
.class-card:hover { border-color: var(--border2); }
.class-card-name { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.class-mini-stats { display: flex; gap: 6px; flex-wrap: wrap; }
.mini-badge { font-size: 11px; padding: 2px 6px; border-radius: 20px; }

/* SEARCH */
.search-input { width: 100%; margin-bottom: 1rem; }

/* SLOT */
.slot-input { width: 36px; height: 26px; padding: 0 4px; font-size: 13px; border-radius: 6px; border: 0.5px solid var(--amber-border); background: var(--surface); color: var(--amber-text); font-family: 'DM Mono', monospace; text-align: center; -moz-appearance: textfield; }
.slot-input::-webkit-inner-spin-button, .slot-input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

/* REPORT */
.report-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: start; padding: 12px 0; border-bottom: 0.5px solid var(--border); }
.report-phones { font-size: 12px; color: var(--text2); line-height: 1.8; font-family: 'DM Mono', monospace; text-align: right; }

/* NOTE BADGE on chips */
.chip-note { font-size: 15px; line-height: 1; flex-shrink: 0; }