:root {
    --bg: #f4f7fb;
    --surface: #ffffff;
    --surface-soft: #eef3fb;
    --border: #d6dfec;
    --text: #122033;
    --muted: #607086;
    --primary: #0f766e;
    --primary-dark: #0c5f59;
    --danger: #dc2626;
    --warning: #f59e0b;
    --success: #16a34a;
    --shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
    --radius: 18px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
    color: var(--text);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

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

.app-shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: #0f172a;
    color: #e5eefb;
    padding: 24px 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.brand-mark {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: linear-gradient(135deg, #14b8a6, #0f766e);
    display: grid;
    place-items: center;
    font-weight: 700;
}

.nav {
    display: grid;
    gap: 10px;
}

.nav-link {
    padding: 12px 14px;
    border-radius: 12px;
    color: #dce7f7;
    background: rgba(148, 163, 184, 0.06);
}

.nav-link:hover {
    background: rgba(20, 184, 166, 0.15);
}

.sidebar-footer {
    display: grid;
    gap: 12px;
}

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

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    margin: 0 0 6px;
    font-size: 2rem;
}

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 22px;
    min-width: 0;
}

.section-title {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    margin-bottom: 18px;
}

.section-title h2 {
    margin: 0 0 4px;
}

.section-actions {
    display: flex;
    gap: 10px;
}

.toolbar,
.form-actions,
.actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.toolbar-wrap {
    flex-wrap: wrap;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.form-grid-single {
    grid-template-columns: 1fr;
}

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

label {
    display: grid;
    gap: 8px;
    font-size: 0.95rem;
}

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

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
    background: #fff;
}

.small-input {
    max-width: 88px;
}

.btn {
    border: 0;
    border-radius: 12px;
    padding: 11px 16px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-small {
    padding: 8px 12px;
    font-size: 0.9rem;
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--surface-soft);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-danger {
    background: #fee2e2;
    color: var(--danger);
}

.alert {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-success {
    background: #dcfce7;
    border-color: #86efac;
}

.alert-error {
    background: #fee2e2;
    border-color: #fca5a5;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    padding: 14px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 22px;
}

.stat-card {
    background: linear-gradient(135deg, #ffffff, #eef7f8);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
}

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

.stat-card strong {
    font-size: 1.8rem;
}

.grid-two {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 18px;
}

.stage-summary-list,
.timeline {
    display: grid;
    gap: 12px;
}

.stage-summary-item,
.timeline-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    border-radius: 14px;
    background: var(--surface-soft);
}

.timeline-item {
    flex-direction: column;
}

.stage-color {
    display: inline-block;
    width: 14px;
    height: 14px;
    border-radius: 999px;
    margin-right: 8px;
}

.kanban-rail {
    position: relative;
}

.kanban-viewport {
    overflow: hidden;
    width: 100%;
}

.kanban-board {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(260px, 260px);
    gap: 16px;
    overflow-x: auto;
    overflow-y: hidden;
    padding-bottom: 10px;
    width: 100%;
    max-width: 100%;
    align-items: start;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.kanban-board::-webkit-scrollbar {
    display: none;
}

.kanban-column {
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-height: 420px;
    padding: 14px;
    backdrop-filter: blur(8px);
}

.kanban-column-header,
.kanban-card-title,
.kanban-meta {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
}

.kanban-dropzone {
    display: grid;
    gap: 12px;
    min-height: 320px;
    padding-top: 12px;
}

.kanban-card {
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px;
    background: var(--surface);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
    cursor: grab;
}

.kanban-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    width: 44px;
    height: 72px;
    border-radius: 999px;
    border: 1px solid rgba(214, 223, 236, 0.95);
    background: rgba(255, 255, 255, 0.92);
    color: var(--text);
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.16);
    backdrop-filter: blur(8px);
}

.kanban-arrow span {
    font-size: 2rem;
    line-height: 1;
}

.kanban-arrow-left {
    left: 8px;
}

.kanban-arrow-right {
    right: 8px;
}

.kanban-arrow:disabled {
    opacity: 0.35;
    cursor: default;
}

.kanban-card.dragging {
    opacity: 0.55;
}

.badge {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.82rem;
}

.badge-success {
    background: #dcfce7;
    color: #166534;
}

.badge-danger {
    background: #fee2e2;
    color: #b91c1c;
}

.badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.badge-muted {
    background: #e5e7eb;
    color: #374151;
}

.hidden {
    display: none;
}

.top-gap {
    margin-top: 16px;
}

.auth-body {
    min-height: 100vh;
    display: grid;
    place-items: center;
}

.auth-shell {
    width: min(460px, calc(100vw - 32px));
}

.auth-card {
    padding: 28px;
}

.auth-hint {
    margin-top: 18px;
    padding: 14px;
    border-radius: 14px;
    background: var(--surface-soft);
}

@media (max-width: 1080px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        gap: 20px;
    }

    .stats-grid,
    .grid-two {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .page-shell {
        padding: 18px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .field-span-2 {
        grid-column: span 1;
    }

    .section-title,
    .toolbar,
    .actions,
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .kanban-arrow {
        width: 38px;
        height: 58px;
    }

    .kanban-arrow-left {
        left: 4px;
    }

    .kanban-arrow-right {
        right: 4px;
    }
}