:root {
    --app-bg: #f4f6f8;
    --app-ink: #111318;
    --app-muted: #677384;
    --app-panel: #ffffff;
    --app-line: #dfe4ec;
    --app-dark: #0c0d10;
    --app-accent: #ff9f0a;
    --app-red: #e5303f;
    --app-green: #16a34a;
    --app-shadow: 0 18px 50px rgba(15, 23, 42, .12);
}

body {
    min-height: 100vh;
    background:
        linear-gradient(180deg, #ffffff 0, var(--app-bg) 310px),
        var(--app-bg);
    color: var(--app-ink);
}

.app-navbar {
    background: rgba(12, 13, 16, .96);
    border-bottom: 4px solid var(--app-accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .16);
    backdrop-filter: blur(12px);
}

.app-brand {
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    color: #fff;
    font-weight: 900;
    letter-spacing: 0;
}

.app-brand:hover {
    color: #fff;
}

.app-brand::before {
    content: "";
    width: 1.35rem;
    height: .95rem;
    border-radius: .35rem;
    background: var(--app-red);
    box-shadow: inset .42rem 0 0 rgba(255, 255, 255, .16);
}

.btn-nav {
    color: rgba(255, 255, 255, .86);
    border-color: transparent;
    font-weight: 700;
}

.btn-nav:hover {
    color: #fff;
    background: rgba(255, 255, 255, .1);
    border-color: rgba(255, 255, 255, .14);
}

.app-page {
    padding: 1.6rem;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    background:
        radial-gradient(circle at 12% 10%, rgba(255, 159, 10, .24), transparent 360px),
        radial-gradient(circle at 88% 90%, rgba(229, 48, 63, .18), transparent 360px),
        linear-gradient(135deg, #08090c 0%, #1d2028 52%, #090a0d 100%);
}

.auth-card,
.app-card,
.quick-create {
    border: 1px solid rgba(17, 19, 24, .08);
    border-radius: .8rem;
    box-shadow: var(--app-shadow);
}

.auth-card {
    width: min(440px, 100%);
    overflow: hidden;
}

.auth-card::before {
    content: "";
    display: block;
    height: .5rem;
    background: linear-gradient(90deg, var(--app-red), var(--app-accent));
}

.app-kicker {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: .28rem .62rem;
    border-radius: 999px;
    background: #111318;
    color: #fff;
    font-size: .72rem;
    font-weight: 900;
    line-height: 1;
    text-transform: uppercase;
}

.display-title {
    color: var(--app-ink);
    font-size: clamp(1.85rem, 2.5vw, 3rem);
    font-weight: 900;
    letter-spacing: 0;
}

.narrow-card {
    max-width: 540px;
}

.narrow-wide {
    max-width: 980px;
}

.quick-create {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) auto;
    gap: .6rem;
    min-width: min(100%, 440px);
}

.planner-shell {
    overflow-x: auto;
    padding: 1rem;
    border-radius: .9rem;
    background: #0a0b0e;
    border: 1px solid #181a20;
    box-shadow: var(--app-shadow);
}

.month-block {
    min-width: 1540px;
    margin-bottom: 2rem;
    background: #050609;
    border-radius: .65rem;
    overflow: hidden;
}

.month-block:last-child {
    margin-bottom: 0;
}

.month-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .7rem 1rem;
    background: linear-gradient(90deg, #ffb429 0%, var(--app-accent) 52%, #ffc24b 100%);
}

.month-title h2 {
    margin: 0;
    color: #08090c;
    font-size: 1.28rem;
    font-weight: 900;
    letter-spacing: 0;
}

.sheet-grid {
    display: grid;
    grid-template-columns: 64px minmax(360px, 1.35fr) 166px 210px 200px 220px 104px repeat(var(--task-count), minmax(118px, 1fr));
}

.cell {
    min-height: 2.35rem;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: .28rem .45rem;
    background: #fff;
    border-right: 1px solid var(--app-line);
    border-bottom: 1px solid var(--app-line);
    color: #111318;
    font-size: .78rem;
}

.cell.head {
    min-height: 2rem;
    background: linear-gradient(180deg, #f3f5f8, #cbd3de);
    color: #111318;
    border-bottom: 3px solid #07080b;
    font-size: .74rem;
    font-weight: 900;
    text-align: center;
    text-transform: uppercase;
}

.id-cell {
    font-weight: 900;
}

.title-cell,
.link-cell {
    justify-content: stretch;
}

.title-cell input {
    font-weight: 900;
    text-align: center;
    text-transform: uppercase;
}

.cell .form-control,
.cell .form-select {
    min-height: 1.75rem;
    padding: .18rem .45rem;
    border: 0;
    border-radius: .38rem;
    background-color: transparent;
    font-size: .78rem;
}

.cell .form-control:focus,
.cell .form-select:focus {
    background: #fff;
    box-shadow: 0 0 0 .16rem rgba(37, 99, 235, .25);
}

.status-select {
    color: #fff;
    background-color: var(--status-color, #c1121f) !important;
    border-radius: 999px !important;
    font-weight: 900;
    text-align: center;
    box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .22);
}

.date-chip {
    width: 100%;
    padding: .22rem .5rem;
    border-radius: 999px;
    background: #f4f6f8;
    color: #111318;
    font-weight: 800;
    text-align: center;
}

.option-cell .btn {
    width: 100%;
}

.checkbox-cell {
    cursor: pointer;
}

.checkbox-cell input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox-cell span {
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--app-green);
    border-radius: .28rem;
    background: #fff;
}

.checkbox-cell:hover span {
    box-shadow: 0 0 0 .25rem rgba(22, 163, 74, .14);
}

.checkbox-cell input:checked + span {
    background: var(--app-green);
    box-shadow: inset 0 0 0 2px #fff;
}

.task-disabled {
    color: #a0a7b3;
    background: #f5f6f8;
    font-weight: 900;
}

.settings-grid {
    display: grid;
    grid-template-columns: minmax(440px, 1.18fr) minmax(360px, .82fr);
    gap: 1rem;
    align-items: start;
}

.config-month {
    padding: 1rem 0;
    border-top: 1px solid var(--app-line);
}

.month-badge {
    display: inline-flex;
    padding: .38rem .7rem;
    border-radius: 999px;
    background: #111318;
    color: #fff;
    font-weight: 900;
}

.day-list {
    display: flex;
    flex-wrap: wrap;
    gap: .55rem;
    margin-top: .75rem;
}

.day-pill {
    display: flex;
    align-items: center;
    gap: .45rem;
    padding: .45rem;
    border: 1px solid var(--app-line);
    border-radius: .7rem;
    background: #fff;
    box-shadow: 0 5px 16px rgba(15, 23, 42, .05);
}

.day-pill > span {
    padding: 0 .25rem;
    color: var(--app-ink);
    font-weight: 800;
}

.day-pill.muted {
    opacity: .55;
}

.settings-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 4.3rem 5.8rem 5rem;
    gap: .5rem;
    align-items: center;
}

.settings-row.columns-row {
    grid-template-columns: minmax(0, 1fr) 5.8rem 5rem;
}

.settings-row.new-row {
    grid-template-columns: minmax(0, 1fr) 4.3rem;
}

.option-section {
    padding: 1rem;
    border: 1px solid var(--app-line);
    border-radius: .8rem;
    background: #f9fafb;
}

.option-checks {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: .55rem;
}

.option-check {
    padding: .65rem .75rem .65rem 2.25rem;
    border: 1px solid var(--app-line);
    border-radius: .65rem;
    background: #fff;
}

.saved {
    box-shadow: inset 0 0 0 2px #22c55e !important;
}

.failed {
    box-shadow: inset 0 0 0 2px #ef4444 !important;
}

@media (max-width: 900px) {
    .app-page {
        padding: 1rem;
    }

    .quick-create,
    .settings-grid,
    .settings-row,
    .settings-row.columns-row,
    .settings-row.new-row {
        grid-template-columns: 1fr;
    }

    .planner-shell {
        padding: .7rem;
    }
}