:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --text: #121936;
    --muted: #697386;
    --line: #d8dee8;
    --brand-red: #be1717;
    --brand-red-dark: #9f1414;
    --brand-blue: #213a8f;
    --brand-blue-dark: #111f63;
    --brand-blue-soft: #edf2ff;
    --primary: var(--brand-red);
    --primary-strong: var(--brand-red-dark);
    --training: #2563eb;
    --sick: #dc2626;
    --vacation: #1f2937;
    --pending: #eef2f7;
    --holiday: #15803d;
    --school-break: #69b536;
    --focus: #f04438;
    --shadow: 0 18px 50px rgba(15, 23, 42, 0.10);
    --radius: 8px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@font-face {
    font-family: "Inter";
    src: url("../fonts/InterVariable.woff2") format("woff2");
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

* {
    box-sizing: border-box;
}

html {
    min-width: 0;
    background: var(--bg);
}

body {
    min-width: 0;
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
    background:
        linear-gradient(180deg, #eef2ff 0, rgba(238, 242, 255, 0) 360px),
        linear-gradient(135deg, rgba(190, 23, 23, 0.07), rgba(33, 58, 143, 0.08) 36%, transparent 62%),
        var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.45;
}

a {
    color: inherit;
}

input,
select,
textarea,
button {
    font: inherit;
}

.app-header {
    position: sticky;
    top: 12px;
    z-index: 10;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 22px;
    align-items: center;
    width: min(1240px, calc(100% - 32px));
    min-width: 0;
    margin: 16px auto 0;
    padding: 12px 14px;
    border: 1px solid rgba(216, 222, 232, 0.9);
    border-bottom: 4px solid var(--brand-red);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 18px 46px rgba(15, 23, 42, 0.11);
    backdrop-filter: blur(16px);
}

.brand {
    display: flex;
    min-width: 0;
    gap: 14px;
    align-items: center;
    color: var(--brand-blue);
    font-weight: 900;
    text-decoration: none;
}

.brand img {
    width: 170px;
    max-width: 34vw;
    height: auto;
}

.brand span {
    min-width: max-content;
    padding-left: 12px;
    border-left: 2px solid var(--brand-red);
    color: var(--brand-blue);
    font-size: 0.86rem;
    font-weight: 900;
    text-transform: uppercase;
}

.main-nav {
    display: flex;
    min-width: 0;
    gap: 6px;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: var(--radius);
    background: #f1f5f9;
}

.main-nav a,
.action-list a {
    min-height: 40px;
    padding: 9px 12px;
    border-radius: var(--radius);
    color: var(--brand-blue-dark);
    font-size: 0.92rem;
    font-weight: 800;
    text-decoration: none;
    transition: background 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.main-nav a[aria-current="page"],
.main-nav a:hover,
.action-list a:hover {
    background: var(--brand-blue);
    color: #fff;
}

.main-nav a:hover,
.button:hover {
    box-shadow: 0 10px 22px rgba(15, 23, 42, 0.11);
}

.page-shell {
    width: min(1240px, calc(100% - 32px));
    min-width: 0;
    margin: 0 auto;
    padding: 28px 0 72px;
}

.page-shell-login {
    display: grid;
    width: 100%;
    min-height: 100vh;
    place-items: center;
    padding: 20px;
    background:
        linear-gradient(135deg, rgba(17, 31, 99, 0.96), rgba(33, 58, 143, 0.86)),
        #172052;
}

.login-panel,
.content-panel {
    border: 1px solid rgba(216, 222, 232, 0.95);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

.login-panel {
    width: min(430px, 100%);
    padding: 32px;
    border-bottom: 5px solid var(--brand-red);
}

.content-panel {
    padding: 24px;
}

.content-panel + .content-panel,
.content-panel + .admin-grid,
.admin-grid + .content-panel {
    margin-top: 18px;
}

.login-logo {
    width: 190px;
    max-width: 100%;
    height: auto;
    margin-bottom: 26px;
}

h1,
h2 {
    margin: 0 0 16px;
    letter-spacing: 0;
    line-height: 1.1;
}

h1 {
    color: var(--brand-blue);
    font-size: 2.05rem;
    font-weight: 900;
}

h2 {
    color: var(--brand-blue-dark);
    font-size: 1.24rem;
    font-weight: 900;
}

.eyebrow {
    margin: 0 0 8px;
    padding-left: 9px;
    border-left: 3px solid var(--brand-red);
    color: var(--brand-red);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0;
    text-transform: uppercase;
}

.muted {
    color: var(--muted);
}

.alert,
.notice {
    display: grid;
    gap: 4px;
    padding: 12px 14px;
    border-radius: var(--radius);
    font-weight: 750;
}

.alert {
    border: 1px solid #fecaca;
    background: #fff1f2;
    color: var(--brand-red-dark);
}

.notice {
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: var(--brand-blue-dark);
}

.notification-stack {
    display: grid;
    gap: 10px;
    margin-bottom: 20px;
}

.form-stack,
.form-grid {
    display: grid;
    gap: 16px;
}

.form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.span-2 {
    grid-column: span 2;
}

label {
    display: grid;
    gap: 7px;
    color: #334155;
    font-size: 0.93rem;
    font-weight: 800;
}

input,
select,
textarea {
    width: 100%;
    min-width: 0;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    box-shadow: inset 0 1px 0 rgba(15, 23, 42, 0.03);
}

input:focus,
select:focus,
textarea:focus {
    outline: 3px solid rgba(240, 68, 56, 0.18);
    border-color: var(--brand-red);
}

textarea {
    resize: vertical;
}

.button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 10px 16px;
    border: 1px solid var(--primary);
    border-radius: var(--radius);
    background: var(--primary);
    color: #fff;
    font-weight: 900;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, color 160ms ease;
}

.button::before {
    content: "›";
    font-size: 1.18em;
    font-weight: 900;
    line-height: 1;
}

.button:hover {
    background: var(--brand-red-dark);
    box-shadow: 0 10px 22px rgba(190, 23, 23, 0.18);
}

.button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.button-secondary {
    border-color: var(--brand-blue);
    background: var(--brand-blue);
}

.button-secondary:hover {
    background: var(--brand-blue-dark);
    box-shadow: 0 10px 22px rgba(33, 58, 143, 0.18);
}

.button-danger {
    border-color: #991b1b;
    background: #991b1b;
}

.button-ghost {
    border-color: #fecaca;
    background: #fff;
    color: var(--brand-red-dark);
}

.button-ghost:hover {
    background: #fff1f2;
    color: var(--brand-red-dark);
}

.toolbar {
    display: flex;
    gap: 16px;
    align-items: end;
    justify-content: space-between;
    margin-bottom: 18px;
    padding: 20px;
    border: 1px solid rgba(216, 222, 232, 0.95);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.07);
}

.toolbar h1 {
    margin-bottom: 0;
}

.inline-form {
    display: flex;
    gap: 8px;
    align-items: center;
}

.inline-form input {
    width: 104px;
}

.day-fraction-picker {
    display: grid;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.fraction-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 180px;
    gap: 10px;
    align-items: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    overflow: hidden;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius);
    background: #e2e8f0;
    box-shadow: 0 18px 44px rgba(15, 23, 42, 0.08);
}

.weekday,
.day {
    background: var(--surface);
}

.weekday {
    padding: 10px 8px;
    background: #f8fafc;
    color: var(--brand-blue-dark);
    font-size: 0.9rem;
    font-weight: 900;
    text-align: center;
}

.day {
    min-height: 118px;
    padding: 12px;
}

.day-empty {
    background: #f1f5f9;
}

.day strong {
    display: inline-grid;
    width: 28px;
    height: 28px;
    margin-bottom: 8px;
    place-items: center;
    border-radius: 999px;
    color: var(--brand-blue-dark);
    font-size: 0.96rem;
    font-weight: 900;
}

.event {
    display: block;
    width: 100%;
    margin: 5px 0;
    padding: 7px 8px;
    border-radius: 6px;
    color: #fff;
    font-size: 0.78rem;
    font-weight: 850;
    line-height: 1.15;
    overflow-wrap: anywhere;
}

.event-training {
    background: var(--training);
}

.event-sick {
    background: var(--sick);
}

.event-vacation_approved {
    background: var(--vacation);
}

.event-vacation_pending {
    border: 1px solid #cbd5e1;
    border-left: 4px solid var(--brand-red);
    background: var(--pending);
    color: var(--text);
}

.event-holiday {
    border: 1px solid rgba(21, 128, 61, 0.28);
    border-left: 4px solid var(--holiday);
    background: #ecfdf3;
    color: #14532d;
}

.event-school_break {
    border: 1px solid rgba(105, 181, 54, 0.30);
    border-left: 4px solid var(--school-break);
    background: #f0f8e8;
    color: #285b14;
}

.list-view,
.admin-grid {
    margin-top: 24px;
}

.list-view {
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.06);
}

.list-row,
.admin-row {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr) 190px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}

.list-row:last-child,
.admin-row:last-child,
.decision-row:last-child,
.user-row:last-child,
.audit-row:last-child,
.conflict-row:last-child {
    border-bottom: 0;
}

.admin-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.85fr);
    gap: 18px;
}

.admin-row {
    grid-template-columns: minmax(0, 1fr) 180px minmax(0, 1fr);
}

.action-list {
    display: grid;
    gap: 6px;
}

.decision-row,
.user-row,
.audit-row {
    display: grid;
    gap: 12px;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
}

.decision-row {
    grid-template-columns: minmax(220px, 1.2fr) minmax(220px, 1fr) minmax(220px, 1fr);
}

.decision-row div,
.user-row div {
    display: grid;
    gap: 4px;
}

.decision-row span,
.user-row span,
.decision-row small {
    color: var(--muted);
}

.decision-row a {
    color: var(--primary-strong);
    font-weight: 900;
}

.decision-row form,
.user-row form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
}

.user-row {
    grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.7fr);
}

.user-edit-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.audit-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr) 180px;
}

.conflict-row {
    display: grid;
    grid-template-columns: minmax(180px, 1.2fr) minmax(170px, 0.9fr) minmax(190px, 1fr) minmax(220px, 1fr);
    gap: 12px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}

.conflict-row strong {
    color: var(--brand-blue);
}

.conflict-row small {
    color: var(--muted);
}

.conflict-current {
    padding-right: 12px;
    padding-left: 12px;
    border-left: 4px solid var(--brand-red);
    border-radius: var(--radius);
    background: #fff7f7;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.checkbox-grid label,
.checkbox-line {
    display: flex;
    gap: 8px;
    align-items: center;
    font-weight: 800;
}

.checkbox-grid input,
.checkbox-line input {
    width: 18px;
    min-height: 18px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.metric-grid div {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.metric-grid span {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
}

.metric-grid strong {
    font-size: 1.6rem;
    line-height: 1.1;
}

@media (max-width: 980px) {
    .app-header {
        position: static;
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .brand img {
        max-width: 240px;
    }

    .main-nav {
        justify-content: start;
        overflow-x: auto;
        padding-bottom: 2px;
        scrollbar-width: thin;
    }

    .main-nav a {
        flex: 0 0 auto;
        white-space: nowrap;
    }

    .app-header > form {
        justify-self: start;
    }
}

@media (max-width: 760px) {
    body {
        background:
            linear-gradient(180deg, #eef2ff 0, rgba(238, 242, 255, 0) 260px),
            var(--bg);
        font-size: 15px;
    }

    .app-header,
    .page-shell {
        width: min(100% - 24px, 100%);
    }

    .app-header {
        margin-top: 10px;
        padding: 14px;
    }

    .brand {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .brand img {
        width: min(220px, 100%);
        max-width: 100%;
    }

    .brand span {
        padding-left: 9px;
        font-size: 0.78rem;
    }

    .page-shell {
        padding: 28px 0 48px;
    }

    .toolbar {
        align-items: stretch;
        flex-direction: column;
        margin-bottom: 16px;
    }

    .toolbar h1 {
        font-size: 1.7rem;
    }

    .inline-form {
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: stretch;
    }

    .inline-form input,
    .inline-form button {
        width: 100%;
    }

    .inline-form button {
        grid-column: 1 / -1;
    }

    .content-panel,
    .list-view,
    .login-panel {
        padding: 18px;
    }

    .calendar-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
        overflow: visible;
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .weekday,
    .day-empty {
        display: none;
    }

    .day {
        display: grid;
        grid-template-columns: 40px minmax(0, 1fr);
        min-height: 54px;
        padding: 10px;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: var(--surface);
        box-shadow: 0 8px 20px rgba(15, 23, 42, 0.05);
    }

    .day strong {
        grid-row: 1 / span 8;
        margin: 0;
    }

    .day .event {
        grid-column: 2;
        margin: 3px 0;
    }

    .list-row,
    .admin-row,
    .admin-grid,
    .form-grid,
    .metric-grid,
    .decision-row,
    .user-row,
    .audit-row,
    .conflict-row,
    .checkbox-grid {
        grid-template-columns: 1fr;
    }

    .decision-row form,
    .user-row form,
    .user-edit-form,
    .fraction-row {
        grid-template-columns: 1fr;
    }

    .span-2 {
        grid-column: auto;
    }
}

@media (max-width: 420px) {
    .app-header,
    .page-shell {
        width: calc(100% - 16px);
    }

    .main-nav {
        display: grid;
        grid-template-columns: 1fr;
        overflow: visible;
    }

    .button,
    .main-nav a {
        width: 100%;
    }

    .toolbar h1 {
        font-size: 1.8rem;
    }
}