/* ============================================================
   Apple-inspired design system
   Loaded by every page (index, login, dashboard, admin, track).
   Page-specific tweaks (chat bubbles, hero, etc.) live in
   their own files / inline <style>.
   ============================================================ */

:root {
    --bg: #f5f5f7;
    --card: #ffffff;
    --text: #1d1d1f;
    --text-muted: #86868b;
    --hairline: rgba(0, 0, 0, 0.08);
    --hairline-strong: rgba(0, 0, 0, 0.14);
    --fill-quaternary: rgba(0, 0, 0, 0.04);
    --fill-tertiary: rgba(0, 0, 0, 0.06);
    --fill-secondary: rgba(0, 0, 0, 0.09);
    --blue: #0071e3;
    --blue-hover: #0077ed;
    --blue-bg: rgba(0, 113, 227, 0.10);
    --blue-bg-hover: rgba(0, 113, 227, 0.16);
    --red: #c8102e;
    --red-bg: rgba(255, 59, 48, 0.10);
    --red-bg-hover: rgba(255, 59, 48, 0.16);
    --amber: #8a4b00;
    --amber-bg: rgba(255, 149, 0, 0.12);
    --amber-bg-hover: rgba(255, 149, 0, 0.18);
    --green: #00682f;
    --green-bg: rgba(52, 199, 89, 0.12);
    --green-bg-hover: rgba(52, 199, 89, 0.18);
    --imsg-blue: #007aff;
    --imsg-gray: #e9e9eb;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 0 0 0.5px rgba(0, 0, 0, 0.05);
    --shadow-card-md: 0 8px 24px -12px rgba(0, 0, 0, 0.10), 0 0 0 0.5px rgba(0, 0, 0, 0.05);
    --glass-bg: rgba(255, 255, 255, 0.72);
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

body {
    background-color: var(--bg);
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Inter', 'Helvetica Neue', system-ui, sans-serif;
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6 {
    letter-spacing: -0.022em;
    font-weight: 600;
    color: var(--text);
}

label, .form-label {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
}

.text-muted     { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-muted) !important; }
.text-primary   { color: var(--blue) !important; }
.text-success   { color: var(--green) !important; }
.text-danger    { color: var(--red) !important; }
.text-warning   { color: var(--amber) !important; }
.text-info      { color: var(--blue) !important; }
.text-dark      { color: var(--text) !important; }

a { color: var(--blue); }
a:hover { color: var(--blue-hover); }

/* Nav */
.glass-nav, .brand-nav {
    background: var(--glass-bg) !important;
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 0.5px solid var(--hairline) !important;
    box-shadow: none !important;
}
.navbar { padding-top: 0.85rem; padding-bottom: 0.85rem; }
.navbar-light, .navbar-expand-lg.bg-white { background: var(--glass-bg) !important; }
.navbar .navbar-brand {
    font-size: 1rem;
    letter-spacing: -0.02em;
    font-weight: 600 !important;
    color: var(--text) !important;
}
.navbar .navbar-brand i { color: var(--blue) !important; }

/* Cards */
.card {
    background: var(--card);
    border: 0.5px solid var(--hairline) !important;
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-lg) !important;
}
.card-header {
    background: transparent !important;
    border-bottom: 0.5px solid var(--hairline) !important;
}

/* Buttons */
.btn {
    font-weight: 500;
    letter-spacing: -0.005em;
    border-radius: var(--radius-md);
    padding: 7px 16px;
    font-size: 0.875rem;
    transition: background-color 0.15s ease, transform 0.06s ease, color 0.15s ease;
    border: 0;
}
.btn:active { transform: scale(0.985); }
.btn:focus, .btn:focus-visible {
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.25) !important;
    outline: none;
}
.btn.rounded-pill { border-radius: 999px; }
.btn-sm { font-size: 0.8rem; padding: 5px 12px; border-radius: var(--radius-sm); }
.btn-lg { padding: 10px 20px; font-size: 0.95rem; }

.btn-primary, .btn-primary:focus {
    background: var(--blue) !important;
    border-color: var(--blue) !important;
    color: #fff !important;
}
.btn-primary:hover { background: var(--blue-hover) !important; border-color: var(--blue-hover) !important; }

.btn-warning, .btn-warning:focus {
    background: var(--amber-bg) !important;
    color: var(--amber) !important;
    border-color: transparent !important;
}
.btn-warning:hover { background: var(--amber-bg-hover) !important; color: var(--amber) !important; }

.btn-danger, .btn-danger:focus {
    background: var(--red-bg) !important;
    color: var(--red) !important;
    border-color: transparent !important;
}
.btn-danger:hover { background: var(--red-bg-hover) !important; color: var(--red) !important; }

.btn-success, .btn-success:focus {
    background: var(--green-bg) !important;
    color: var(--green) !important;
    border-color: transparent !important;
}
.btn-success:hover { background: var(--green-bg-hover) !important; color: var(--green) !important; }

.btn-outline-primary, .btn-outline-primary:focus {
    background: var(--blue-bg) !important;
    color: var(--blue) !important;
    border: 0 !important;
}
.btn-outline-primary:hover { background: var(--blue-bg-hover) !important; color: var(--blue) !important; }

.btn-outline-secondary, .btn-outline-secondary:focus {
    background: var(--fill-quaternary) !important;
    color: var(--text) !important;
    border: 0 !important;
}
.btn-outline-secondary:hover { background: var(--fill-tertiary) !important; color: var(--text) !important; }

.btn-outline-dark, .btn-outline-dark:focus {
    background: var(--fill-quaternary) !important;
    color: var(--text) !important;
    border: 0 !important;
}
.btn-outline-dark:hover { background: var(--fill-tertiary) !important; color: var(--text) !important; }

.btn-outline-danger, .btn-outline-danger:focus {
    background: var(--red-bg) !important;
    color: var(--red) !important;
    border: 0 !important;
}
.btn-outline-danger:hover { background: var(--red-bg-hover) !important; color: var(--red) !important; }

.btn-light, .btn-light:focus {
    background: var(--fill-quaternary) !important;
    color: var(--text) !important;
    border: 0 !important;
}
.btn-light:hover { background: var(--fill-tertiary) !important; color: var(--text) !important; }

.btn-dark, .btn-dark:focus {
    background: var(--text) !important;
    border-color: var(--text) !important;
    color: #fff !important;
}
.btn-dark:hover { background: #000 !important; }

.btn-link {
    color: var(--blue) !important;
    text-decoration: none;
    padding: 4px 8px;
    font-weight: 500;
}
.btn-link:hover { color: var(--blue-hover) !important; text-decoration: none; }

/* Form controls */
.form-control, .form-select {
    border: 0.5px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    box-shadow: none;
    color: var(--text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    background: #fff;
}
.form-control::placeholder { color: var(--text-muted); }
.form-control:focus, .form-select:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.18);
    background: #fff;
}
.form-control.bg-light, textarea.form-control.bg-light, .form-select.bg-light {
    background: var(--fill-quaternary) !important;
    border-color: transparent;
}
textarea.form-control { resize: none; }
input[type="file"].form-control { padding: 6px 10px; }

.input-group .input-group-text {
    background: var(--fill-quaternary);
    border: 0.5px solid var(--hairline-strong);
    color: var(--text-muted);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}
.input-group > .form-control:not(:first-child),
.input-group > .form-select:not(:first-child) { border-left: 0; }
.input-group > .form-control:not(:last-child),
.input-group > .form-select:not(:last-child) { border-right: 0; }

/* Form floating — Apple theme polish */
.form-floating > .form-control,
.form-floating > .form-select {
    height: calc(3.5rem + 2px);
    line-height: 1.25;
    border-radius: var(--radius-md);
    background: #fff;
}
.form-floating > .form-control:focus,
.form-floating > .form-select:focus { background: #fff; }
.form-floating > label {
    color: var(--text-muted);
    font-weight: 400;
    font-size: 0.9rem;
    padding: 1rem 12px;
    letter-spacing: -0.005em;
}
.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label,
.form-floating > .form-select ~ label {
    color: var(--text-muted);
    opacity: 0.85;
}
.form-floating > textarea.form-control { height: auto; min-height: calc(3.5rem + 2px); }
/* Inside an input-group, smooth the corners between the floating field and the trailing button */
.input-group > .form-floating { flex: 1 1 auto; min-width: 0; }
.input-group > .form-floating:not(:first-child) > .form-control,
.input-group > .form-floating:not(:first-child) > .form-select {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
.input-group > .form-floating:not(:last-child) > .form-control,
.input-group > .form-floating:not(:last-child) > .form-select {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

/* Alerts */
.alert {
    border-radius: var(--radius-md);
    border: 0.5px solid var(--hairline);
    font-size: 0.875rem;
    background: var(--fill-quaternary);
    color: var(--text);
}
.alert-info { background: var(--blue-bg); color: var(--blue); border-color: transparent; }
.alert-warning { background: var(--amber-bg); color: var(--amber); border-color: transparent; }
.alert-danger { background: var(--red-bg); color: var(--red); border-color: transparent; }
.alert-success { background: var(--green-bg); color: var(--green); border-color: transparent; }

/* Badges */
.badge {
    font-weight: 500;
    letter-spacing: 0.005em;
    border-radius: 999px;
    padding: 4px 10px;
    font-size: 0.72rem;
}
.badge.bg-light, .badge.bg-light.text-dark {
    background: var(--fill-quaternary) !important;
    color: var(--text) !important;
    border: 0 !important;
}
.badge.bg-primary   { background: var(--blue-bg) !important;  color: var(--blue) !important; }
.badge.bg-warning   { background: var(--amber-bg) !important; color: var(--amber) !important; }
.badge.bg-success   { background: var(--green-bg) !important; color: var(--green) !important; }
.badge.bg-danger    { background: var(--red-bg) !important;   color: var(--red) !important; }
.badge.bg-info      { background: var(--blue-bg) !important;  color: var(--blue) !important; }
.badge.bg-secondary { background: var(--fill-tertiary) !important; color: var(--text-muted) !important; }
.badge.bg-dark      { background: var(--text) !important;     color: #fff !important; }

/* Status pills (canonical) */
.status-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 11px;
    font-weight: 500;
    font-size: 0.72rem;
    letter-spacing: 0.01em;
    text-transform: capitalize;
    border: 0;
}
.status-open     { background: var(--red-bg);   color: var(--red); }
.status-answered { background: var(--amber-bg); color: var(--amber); }
.status-closed   { background: var(--green-bg); color: var(--green); }
.status-pending  { background: var(--blue-bg);  color: var(--blue); }
.status-default  { background: var(--fill-tertiary); color: var(--text-muted); }

/* Meta chip (small inline metadata) */
.meta-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--fill-quaternary);
    color: var(--text-muted);
    border-radius: 999px;
    padding: 3px 9px;
    font-size: 0.72rem;
    border: 0;
}
.meta-chip i { font-size: 0.7rem; opacity: 0.7; }

/* Tables */
.table { color: var(--text); margin-bottom: 0; }
.table > :not(caption) > * > * {
    padding: 14px 12px;
    border-bottom-color: var(--hairline);
    background-color: transparent;
}
.table thead th, .table thead.bg-light {
    background: transparent !important;
    color: var(--text-muted) !important;
    font-weight: 500;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 0.5px solid var(--hairline) !important;
}
.table tbody tr { transition: background-color 0.12s ease; }
.table.table-hover tbody tr:hover { background: var(--fill-quaternary) !important; }

/* Stat / metric cards */
.stat-card, .metric-card {
    border-radius: var(--radius-lg) !important;
    border: 0.5px solid var(--hairline) !important;
    box-shadow: var(--shadow-card);
    background: var(--card);
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.metric-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-card-md); }
.metric-card.bg-primary, .metric-card.bg-warning, .metric-card.bg-info, .metric-card.bg-success, .metric-card.bg-danger {
    background: var(--card) !important;
    color: var(--text) !important;
}
.metric-card.bg-primary  { background: var(--blue-bg) !important; }
.metric-card.bg-warning  { background: var(--amber-bg) !important; }
.metric-card.bg-success  { background: var(--green-bg) !important; }
.metric-card.bg-danger   { background: var(--red-bg) !important; }
.metric-card .h3 { font-weight: 600; letter-spacing: -0.025em; }

/* Section labels */
.section-label {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
    display: block;
}

/* Action button pair: inline desktop, stacked mobile */
.action-pair {
    display: grid;
    gap: 8px;
    grid-template-columns: 1fr 1fr;
}
@media (max-width: 575.98px) {
    .action-pair { grid-template-columns: 1fr; }
}
.action-pair > .btn { width: 100%; }
/* When one button is hidden, let the remaining one span the whole row. */
.action-pair:has(> .btn.d-none) { grid-template-columns: 1fr; }

/* Dividers */
hr { border-color: var(--hairline); opacity: 1; }
.border, .border-bottom, .border-top, .border-end, .border-start {
    border-color: var(--hairline) !important;
}

/* Spinner */
.spinner-border, .spinner-border.text-primary { color: var(--blue); }

/* Loader overlay */
#loader-overlay { background: var(--bg) !important; }

/* Subtle entry */
.card { animation: appleFadeUp 0.25s ease; }
@keyframes appleFadeUp {
    from { opacity: 0; transform: translateY(2px); }
    to   { opacity: 1; transform: none; }
}

/* Modal */
.modal-content { border-radius: var(--radius-lg); border: 0.5px solid var(--hairline); }

/* Tabulator (used on dashboard / admin) — soften default theme */
.tabulator {
    background: transparent;
    border: 0;
    font-size: 0.875rem;
}
.tabulator .tabulator-header {
    background: transparent;
    border-bottom: 0.5px solid var(--hairline);
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.tabulator .tabulator-row { background: transparent; border-bottom: 0.5px solid var(--hairline); }
.tabulator .tabulator-row:hover { background: var(--fill-quaternary) !important; }

/* Misc legacy */
.attach-item {
    padding: 8px 10px;
    border: 0.5px solid var(--hairline);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    background: var(--card);
}