:root {
    /* Refined ink-and-coral palette — distinctive but professional */
    --ink-900: #0e1116;
    --ink-800: #161a22;
    --ink-700: #1d222c;
    --ink-600: #2a303c;
    --ink-500: #3a4150;
    --ink-400: #5a6173;
    --ink-300: #8b91a3;
    --ink-200: #c2c6d2;
    --ink-100: #e8eaef;
    --ink-50:  #f5f6f9;
    --paper:   #fbfbf7;

    --coral:        #e85a3d;
    --coral-soft:   #f3a08c;
    --coral-dim:    #c44a30;

    --moss:    #5d7c54;
    --gold:    #c9a96e;
    --rose:    #c2557a;

    --success: #5d7c54;
    --warning: #c9a96e;
    --danger:  #c2557a;
    --info:    #4a6b8a;

    --shadow-sm: 0 1px 2px rgba(14,17,22,0.06);
    --shadow-md: 0 4px 16px rgba(14,17,22,0.08);
    --shadow-lg: 0 12px 40px rgba(14,17,22,0.12);

    --display: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
    --body: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
    --mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--body);
    background: var(--paper);
    color: var(--ink-900);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    min-height: 100vh;
}

/* Subtle grain texture overlay for warmth */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    opacity: 0.4;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
}

a { color: var(--coral-dim); text-decoration: none; }
a:hover { color: var(--coral); }

/* ─── Sidebar ─────────────────────────────────────── */
.sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: 260px;
    background: var(--ink-900);
    color: var(--ink-100);
    padding: 28px 20px;
    overflow-y: auto;
    z-index: 10;
    border-right: 1px solid var(--ink-700);
}

.sidebar__brand {
    font-family: var(--display);
    font-size: 24px;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 36px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}
.sidebar__brand-mark {
    color: var(--coral);
    font-size: 18px;
}
.sidebar__brand-text { color: var(--paper); }
.sidebar__brand-logo { height: 32px; width: auto; display: block; }
.sidebar__avatar--img { padding: 0; object-fit: cover; }
.user-thumb {
    width: 36px; height: 36px;
    border-radius: 50%;
    object-fit: cover;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--ink-100, #e5e7eb);
    color: var(--ink-900, #111827);
    font-weight: 600;
    font-size: 13px;
}
.user-thumb--initials { letter-spacing: 0.02em; }
.accent { color: var(--coral); font-style: italic; }

.sidebar__user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--ink-800);
    border-radius: 4px;
    margin-bottom: 28px;
    border-left: 2px solid var(--coral);
}
.sidebar__avatar {
    width: 38px; height: 38px;
    background: var(--coral);
    color: var(--paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.04em;
}
.sidebar__name { font-size: 14px; font-weight: 500; }
.sidebar__role {
    font-size: 11px;
    color: var(--ink-300);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 2px;
}

.sidebar__nav { list-style: none; padding: 0; margin: 0; }
.sidebar__nav li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    color: var(--ink-200);
    font-size: 14px;
    border-radius: 3px;
    margin-bottom: 2px;
    transition: all 0.15s ease;
}
.sidebar__nav li a:hover {
    background: var(--ink-800);
    color: var(--paper);
}
.sidebar__nav li a.active {
    background: var(--ink-800);
    color: var(--coral);
    border-left: 2px solid var(--coral);
    padding-left: 8px;
}
.nav-icon {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-400);
    width: 16px;
    text-align: center;
}
.sidebar__nav li a.active .nav-icon { color: var(--coral); }

.sidebar__divider {
    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--ink-400);
    margin: 22px 0 8px;
    padding: 0 10px;
}

.sidebar__foot {
    margin-top: 40px;
    padding-top: 18px;
    border-top: 1px solid var(--ink-700);
    font-size: 11px;
    color: var(--ink-400);
    font-family: var(--mono);
    line-height: 1.7;
}

/* ─── Main content ────────────────────────────────── */
.main {
    margin-left: 260px;
    padding: 40px 56px;
    min-height: 100vh;
    position: relative;
    z-index: 2;
}
.main--full {
    padding: 0;
    min-height: 100vh;
    position: relative;
    z-index: 2;
}

.page-header {
    margin-bottom: 36px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
    flex-wrap: wrap;
}
.page-title {
    font-family: var(--display);
    font-size: 42px;
    font-weight: 500;
    letter-spacing: -0.025em;
    margin: 0;
    line-height: 1.05;
}
.page-title .accent { font-style: italic; }
.page-subtitle {
    color: var(--ink-400);
    font-size: 14px;
    margin-top: 6px;
    font-family: var(--mono);
}

/* ─── Cards ──────────────────────────────────────── */
.card {
    background: white;
    border: 1px solid var(--ink-100);
    border-radius: 4px;
    padding: 24px;
    box-shadow: var(--shadow-sm);
}
.card__title {
    font-family: var(--display);
    font-size: 20px;
    font-weight: 500;
    margin: 0 0 16px;
    letter-spacing: -0.015em;
}

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
    .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
    .main { padding: 24px 20px; margin-left: 0; }
    .sidebar { position: relative; width: 100%; height: auto; }
}

/* Balance cards */
.balance-card {
    background: white;
    border: 1px solid var(--ink-100);
    border-left: 3px solid var(--coral);
    border-radius: 4px;
    padding: 22px 24px;
    position: relative;
    overflow: hidden;
}
.balance-card__label {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-400);
}
.balance-card__remaining {
    font-family: var(--display);
    font-size: 52px;
    font-weight: 500;
    line-height: 1;
    margin: 12px 0 4px;
    letter-spacing: -0.03em;
}
.balance-card__unit {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-400);
    margin-left: 4px;
}
.balance-card__meta {
    font-size: 12px;
    color: var(--ink-400);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--ink-100);
    display: flex;
    justify-content: space-between;
}
.balance-card__meta-row {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
}

/* Stats */
.stat-card {
    background: var(--ink-900);
    color: var(--paper);
    padding: 22px 24px;
    border-radius: 4px;
}
.stat-card__value {
    font-family: var(--display);
    font-size: 44px;
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 6px;
}
.stat-card__value .accent { color: var(--coral); }
.stat-card__label {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--ink-300);
}

/* ─── Tables ─────────────────────────────────────── */
.table-wrap {
    background: white;
    border: 1px solid var(--ink-100);
    border-radius: 4px;
    overflow-x: auto;
}
table.data {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
table.data th {
    text-align: left;
    padding: 14px 18px;
    background: var(--ink-50);
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-500);
    border-bottom: 1px solid var(--ink-100);
}
table.data td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--ink-100);
    vertical-align: middle;
}
table.data tr:last-child td { border-bottom: none; }
table.data tr:hover { background: var(--ink-50); }

/* ─── Status pills ───────────────────────────────── */
.pill {
    display: inline-block;
    padding: 3px 11px;
    font-size: 11px;
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    border-radius: 999px;
    border: 1px solid;
    font-weight: 500;
}
.pill--pending  { color: var(--gold);    border-color: var(--gold);    background: rgba(201,169,110,0.08); }
.pill--approved { color: var(--moss);    border-color: var(--moss);    background: rgba(93,124,84,0.08); }
.pill--rejected { color: var(--rose);    border-color: var(--rose);    background: rgba(194,85,122,0.08); }
.pill--cancelled{ color: var(--ink-400); border-color: var(--ink-300); background: var(--ink-50); }

/* ─── Buttons ────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--ink-900);
    color: var(--paper);
    border: 1px solid var(--ink-900);
    border-radius: 3px;
    font-family: var(--body);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
}
.btn:hover {
    background: var(--coral);
    border-color: var(--coral);
    color: var(--paper);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.btn--coral {
    background: var(--coral);
    border-color: var(--coral);
}
.btn--coral:hover { background: var(--coral-dim); border-color: var(--coral-dim); }

.btn--ghost {
    background: transparent;
    color: var(--ink-900);
    border-color: var(--ink-300);
}
.btn--ghost:hover {
    background: var(--ink-900);
    color: var(--paper);
    border-color: var(--ink-900);
}

.btn--danger { background: var(--rose); border-color: var(--rose); }
.btn--danger:hover { background: #a64362; border-color: #a64362; }

.btn--success { background: var(--moss); border-color: var(--moss); }
.btn--success:hover { background: #4a6442; border-color: #4a6442; }

.btn--sm { padding: 6px 14px; font-size: 12px; }

/* ─── Forms ──────────────────────────────────────── */
.form {
    background: white;
    border: 1px solid var(--ink-100);
    border-radius: 4px;
    padding: 32px;
    max-width: 600px;
}
.form--wide { max-width: 100%; }
.form__row { margin-bottom: 20px; }
.form__row--inline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form__label {
    display: block;
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-500);
    margin-bottom: 6px;
}
.form__input, .form__select, .form__textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--ink-200);
    border-radius: 3px;
    font-family: var(--body);
    font-size: 14px;
    background: white;
    color: var(--ink-900);
    transition: border-color 0.15s ease;
}
.form__input:focus, .form__select:focus, .form__textarea:focus {
    outline: none;
    border-color: var(--coral);
    box-shadow: 0 0 0 3px rgba(232,90,61,0.12);
}
.form__textarea { min-height: 96px; resize: vertical; font-family: var(--body); }
.form__hint { font-size: 12px; color: var(--ink-400); margin-top: 4px; }
.form__error { font-size: 12px; color: var(--rose); margin-top: 4px; font-family: var(--mono); }

.form__check {
    display: flex; align-items: center; gap: 8px;
    font-size: 14px;
}
.form__check input { width: 16px; height: 16px; accent-color: var(--coral); }

.form__actions {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--ink-100);
}

/* ─── Flash messages ─────────────────────────────── */
.flashes { margin-bottom: 24px; }
.flash {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 18px;
    border-radius: 3px;
    margin-bottom: 8px;
    font-size: 14px;
    background: white;
    border: 1px solid var(--ink-100);
    border-left: 3px solid;
}
.flash__mark {
    width: 6px; height: 6px; border-radius: 50%;
    background: currentColor;
}
.flash--success { border-left-color: var(--moss);   color: var(--moss); }
.flash--danger  { border-left-color: var(--rose);   color: var(--rose); }
.flash--warning { border-left-color: var(--gold);   color: var(--gold); }
.flash--info    { border-left-color: var(--info);   color: var(--info); }
.flash > span:last-child { color: var(--ink-900); }

/* ─── Login page ─────────────────────────────────── */
.login-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}
@media (max-width: 900px) {
    .login-shell { grid-template-columns: 1fr; }
    .login-art { display: none; }
}
.login-art {
    background: var(--ink-900);
    color: var(--paper);
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}
.login-art::after {
    content: '';
    position: absolute;
    bottom: -180px;
    right: -120px;
    width: 480px; height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--coral) 0%, transparent 70%);
    opacity: 0.45;
}
.login-art__brand {
    font-family: var(--display);
    font-size: 36px;
    font-weight: 500;
    letter-spacing: -0.025em;
    position: relative;
    z-index: 2;
}
.login-art__brand-logo { height: 56px; width: auto; display: block; }
.login-art__quote {
    font-family: var(--display);
    font-size: 48px;
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 400;
    max-width: 480px;
    position: relative;
    z-index: 2;
}
.login-art__quote .accent { font-style: italic; }
.login-art__quote-mark {
    font-family: var(--display);
    color: var(--coral);
    font-size: 80px;
    line-height: 0.5;
    display: block;
    margin-bottom: 24px;
}
.login-art__foot {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-300);
    position: relative;
    z-index: 2;
}

.login-form-side {
    padding: 80px 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
@media (max-width: 700px) { .login-form-side { padding: 40px 24px; } }
.login-form {
    max-width: 380px;
    width: 100%;
    margin: 0 auto;
}
.login-form h1 {
    font-family: var(--display);
    font-size: 40px;
    font-weight: 500;
    margin: 0 0 8px;
    letter-spacing: -0.025em;
}
.login-form h1 .accent { font-style: italic; }
.login-form__sub {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--ink-400);
    margin-bottom: 36px;
}

/* ─── Detail row ─────────────────────────────────── */
.detail-list { display: grid; gap: 12px; }
.detail-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    padding: 10px 0;
    border-bottom: 1px solid var(--ink-100);
    font-size: 14px;
}
.detail-row__label {
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-400);
}

/* ─── Calendar ───────────────────────────────────── */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--ink-100);
    border: 1px solid var(--ink-100);
    border-radius: 4px;
    overflow: hidden;
}
.calendar-day-name {
    background: var(--ink-50);
    padding: 10px;
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--ink-500);
    text-align: center;
}
.calendar-cell {
    background: white;
    min-height: 96px;
    padding: 8px;
    position: relative;
}
.calendar-cell--other { background: var(--ink-50); opacity: 0.5; }
.calendar-cell--today {
    background: rgba(232,90,61,0.06);
}
.calendar-cell__num {
    font-family: var(--display);
    font-size: 16px;
    font-weight: 500;
    color: var(--ink-700);
}
.calendar-cell--today .calendar-cell__num { color: var(--coral); }
.calendar-cell__events { margin-top: 4px; display: flex; flex-direction: column; gap: 2px; }
.calendar-cell__event {
    font-size: 10px;
    font-family: var(--mono);
    background: var(--coral);
    color: white;
    padding: 2px 5px;
    border-radius: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ─── Calendar navigation ────────────────────────── */
.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.calendar-nav__month {
    font-family: var(--display);
    font-size: 28px;
    font-weight: 500;
    letter-spacing: -0.02em;
}

/* ─── Empty state ────────────────────────────────── */
.empty {
    text-align: center;
    padding: 60px 30px;
    color: var(--ink-400);
    font-family: var(--mono);
    font-size: 13px;
}
.empty__mark {
    font-family: var(--display);
    font-size: 64px;
    color: var(--ink-200);
    margin-bottom: 12px;
}

/* ─── Utilities ──────────────────────────────────── */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.text-muted { color: var(--ink-400); }
.text-mono { font-family: var(--mono); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.flex { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.flex--between { justify-content: space-between; }
hr.divider { border: none; border-top: 1px solid var(--ink-100); margin: 28px 0; }