:root {
    --color-primary: #3457f5;
    --color-primary-dark: #2439b8;
    --color-primary-soft: #eef2ff;
    --color-accent: #0f766e;
    --color-accent-dark: #0b5b55;
    --color-accent-soft: #ccfbf1;
    --color-secondary: var(--color-accent);
    --color-secondary-dark: var(--color-accent-dark);
    --color-secondary-soft: var(--color-accent-soft);
    --color-bg: #f5f8fc;
    --color-bg-soft: #eef3fb;
    --color-surface: #ffffff;
    --color-surface-soft: #f8fafc;
    --color-border: #dbe4f0;
    --color-border-strong: #c5d2e4;
    --color-text: #0f172a;
    --color-heading: #071124;
    --color-muted: #64748b;
    --color-dark: #091120;
    --color-dark-2: #13233f;
    --color-success: #16a34a;
    --color-warning: #f59e0b;
    --color-danger: #dc2626;
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --radius-pill: 999px;
    --shadow-sm: 0 12px 34px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 22px 54px rgba(15, 23, 42, 0.1);
    --shadow-lg: 0 34px 90px rgba(15, 23, 42, 0.16);
    --container: 1240px;
    --container-wide: 1440px;
    --container-admin: 1520px;
    --container-auth: 1120px;
    --header-height: 76px;
    --section-y: 72px;
    --section-y-sm: 36px;
    --font-display: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "Fira Code", "SFMono-Regular", Consolas, monospace;
    --font-scale-body: 1;
    --font-scale-heading: 1;
    --transition-base: 180ms ease;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-body);
    font-size: calc(1rem * var(--font-scale-body));
    line-height: 1.65;
    color: var(--color-text);
    background:
        radial-gradient(circle at top left, rgba(52, 87, 245, 0.08), transparent 28%),
        linear-gradient(180deg, #f7f9fd, var(--color-bg));
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

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

img {
    display: block;
    max-width: 100%;
}

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

button {
    cursor: pointer;
}

.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-main {
    flex: 1 1 auto;
}

.container,
.container-wide,
.container-admin,
.container-auth,
.container-reading {
    width: min(100% - 2rem, var(--container));
    margin: 0 auto;
}

.container-wide {
    width: min(100% - 3rem, var(--container-wide));
}

.container-admin {
    width: min(100% - 3rem, var(--container-admin));
}

.container-auth {
    width: min(100% - 2rem, var(--container-auth));
}

.container-reading {
    width: min(100% - 2rem, 920px);
}

.section {
    padding: var(--section-y) 0;
}

.section-tight {
    padding: var(--section-y-sm) 0;
}

.stack-sm > * + * {
    margin-top: 0.85rem;
}

.stack-md > * + * {
    margin-top: 1.3rem;
}

.stack-lg > * + * {
    margin-top: 2rem;
}

.row-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.align-end {
    align-items: flex-end;
}

.grid-2,
.grid-3,
.grid-4,
.layout-sidebar,
.layout-split,
.layout-split-thirds,
.product-grid,
.supplier-grid,
.filter-grid {
    display: grid;
    gap: 1.4rem;
}

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

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.layout-sidebar {
    grid-template-columns: minmax(280px, 300px) minmax(0, 1fr);
    align-items: start;
}

.layout-split {
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    align-items: start;
}

.layout-split-thirds {
    grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
    align-items: start;
}

.product-grid,
.supplier-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.filter-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    align-items: end;
}

.hero-actions,
.header-actions,
.page-head__actions,
.dashboard-topbar__actions,
.badge-row,
.pagination {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.admin-hero-notes {
    display: grid;
    gap: 0.65rem;
    margin-top: 1rem;
}

.admin-hero-notes span {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--color-muted);
    font-size: 0.95rem;
    line-height: 1.55;
}

.admin-hero-notes span::before {
    content: "";
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: rgba(52, 87, 245, 0.32);
    flex: 0 0 auto;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--color-primary);
}

.eyebrow::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 999px;
    background: currentColor;
    opacity: 0.4;
}

h1,
h2,
h3,
h4,
h5,
h6,
.card-title,
.section-title-sm,
.sidebar-title,
.site-brand__name {
    margin: 0;
    font-family: var(--font-display);
    color: var(--color-heading);
    letter-spacing: -0.045em;
}

h1 {
    font-size: calc(clamp(2.25rem, 4vw, 3.5rem) * var(--font-scale-heading));
    line-height: 1.05;
    font-weight: 800;
}

h2,
.section-title-sm {
    font-size: calc(clamp(1.65rem, 2vw, 2rem) * var(--font-scale-heading));
    line-height: 1.14;
    font-weight: 800;
}

h3,
.card-title {
    font-size: calc(clamp(1.15rem, 1.45vw, 1.375rem) * var(--font-scale-heading));
    line-height: 1.24;
    font-weight: 700;
}

.section-title-xs {
    font-size: calc(1rem * var(--font-scale-heading));
    line-height: 1.35;
    font-weight: 800;
    color: var(--color-heading);
}

p {
    margin: 0;
}

.body-text {
    color: color-mix(in srgb, var(--color-text) 84%, white);
    line-height: 1.7;
}

.meta-text,
.helper-text {
    color: var(--color-muted);
    font-size: 0.92rem;
    line-height: 1.58;
}

.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0.82rem 1.2rem;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    font-size: 0.95rem;
    font-weight: 700;
    transition:
        transform var(--transition-base),
        box-shadow var(--transition-base),
        border-color var(--transition-base),
        background var(--transition-base),
        color var(--transition-base);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:focus-visible,
.nav-link:focus-visible,
.dashboard-nav-link:focus-visible,
.back-link:focus-visible,
.input:focus-visible,
.site-header__toggle:focus-visible,
.info-hint:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--color-primary) 28%, white);
    outline-offset: 2px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-outline {
    border-color: var(--color-border);
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-heading);
}

.btn-ghost {
    background: transparent;
    color: var(--color-muted);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #b91c1c);
    color: #fff;
}

.btn-success {
    background: linear-gradient(135deg, #22c55e, #15803d);
    color: #fff;
}

.btn-muted {
    background: var(--color-surface-soft);
    border-color: var(--color-border);
    color: var(--color-heading);
}

.card {
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-border);
    border-radius: 24px;
    box-shadow: var(--shadow-sm);
}

.card-hero {
    background:
        radial-gradient(circle at top left, rgba(52, 87, 245, 0.12), transparent 42%),
        linear-gradient(180deg, #ffffff, #f8fbff);
}

.card-form,
.card-product,
.card-supplier,
.card-dashboard,
.card-stat {
    padding: 1.55rem;
}

.card-hover {
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card-hover:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: color-mix(in srgb, var(--color-primary) 12%, var(--color-border));
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 30px;
    padding: 0.35rem 0.8rem;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.badge-primary {
    background: var(--color-primary-soft);
    color: var(--color-primary-dark);
}

.badge-secondary {
    background: var(--color-accent-soft);
    color: var(--color-accent-dark);
}

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

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

.badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.badge-muted,
.badge-standard {
    background: var(--color-surface-soft);
    color: var(--color-muted);
}

.alert {
    position: relative;
    padding: 1rem 1.15rem;
    border-radius: var(--radius-md);
    border: 1px solid;
}

.alert-success {
    background: #ecfdf5;
    border-color: #a7f3d0;
    color: #166534;
}

.alert-danger,
.alert-error {
    background: #fff1f2;
    border-color: #fecdd3;
    color: #9f1239;
}

.alert-info {
    background: #eff6ff;
    border-color: #bfdbfe;
    color: #1d4ed8;
}

.alert-warning {
    background: #fffbeb;
    border-color: #fde68a;
    color: #92400e;
}

.stat-value {
    margin-top: 0.35rem;
    font-size: calc(clamp(2rem, 2.1vw, 2.7rem) * var(--font-scale-heading));
    line-height: 1;
    font-weight: 800;
    color: var(--color-heading);
}

.info-hint {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.15rem;
    height: 1.15rem;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: var(--color-surface-soft);
    color: var(--color-muted);
    font-size: 0.72rem;
    font-weight: 800;
    line-height: 1;
    cursor: help;
    padding: 0;
}

.info-hint:hover::after,
.info-hint:focus-visible::after,
.btn[data-hint]:hover::after,
.btn[data-hint]:focus-visible::after,
.dashboard-nav-link[data-hint]:hover::after,
.dashboard-nav-link[data-hint]:focus-visible::after,
.back-link[data-hint]:hover::after,
.back-link[data-hint]:focus-visible::after {
    content: attr(data-hint);
    position: absolute;
    top: calc(100% + 0.55rem);
    right: 0;
    z-index: 50;
    width: min(280px, 70vw);
    padding: 0.8rem 0.9rem;
    border-radius: var(--radius-md);
    background: var(--color-dark);
    color: #fff;
    box-shadow: var(--shadow-md);
    font-size: 0.84rem;
    line-height: 1.5;
    text-align: left;
    white-space: pre-line;
}

.dashboard-nav-link[data-hint],
.back-link[data-hint] {
    position: relative;
}

.tone-primary {
    background: linear-gradient(180deg, #ffffff, rgba(238, 242, 255, 0.96));
}

.tone-secondary {
    background: linear-gradient(180deg, #ffffff, rgba(204, 251, 241, 0.96));
}

.tone-warning {
    background: linear-gradient(180deg, #ffffff, #fff7e6);
}

.tone-muted {
    background: linear-gradient(180deg, #ffffff, var(--color-surface-soft));
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
    color: var(--color-muted);
}

.breadcrumb a:hover,
.nav-link:hover,
.nav-link.is-active,
.dashboard-nav-link:hover,
.dashboard-nav-link.is-active,
.back-link:hover {
    color: var(--color-primary);
}

.breadcrumb-sep {
    color: color-mix(in srgb, var(--color-muted) 72%, white);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--color-muted);
    font-weight: 700;
}

.back-link::before {
    content: "\2190";
}

.input,
textarea,
select {
    width: 100%;
    min-height: 50px;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text);
    transition:
        border-color var(--transition-base),
        box-shadow var(--transition-base),
        background var(--transition-base);
}

textarea {
    min-height: 136px;
    resize: vertical;
}

.input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-border));
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-primary) 15%, white);
}

.input.is-error {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.08);
}

.form-field {
    display: block;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--color-heading);
}

.error-text {
    display: block;
    margin-top: 0.45rem;
    color: var(--color-danger);
    font-size: 0.84rem;
}

.radio-card,
.check-pill {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.95rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
}

.radio-card:has(input:checked),
.check-pill:has(input:checked) {
    border-color: color-mix(in srgb, var(--color-primary) 44%, white);
    background: var(--color-primary-soft);
}

.table-wrap {
    overflow-x: auto;
    width: 100%;
}

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

.data-table th,
.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    text-align: left;
    vertical-align: top;
}

.data-table th {
    font-size: 0.78rem;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.14em;
}

.empty-state {
    padding: 2.4rem;
    text-align: center;
}

.site-footer {
    margin-top: 3rem;
}

@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 1024px) {
    .grid-3,
    .grid-4,
    .grid-2,
    .layout-sidebar,
    .layout-split,
    .layout-split-thirds {
        grid-template-columns: 1fr;
    }

    .container-wide,
    .container-admin {
        width: min(100% - 2rem, var(--container-wide));
    }
}

@media (max-width: 720px) {
    body {
        line-height: 1.6;
    }

    h1 {
        font-size: calc(2.25rem * var(--font-scale-heading));
    }

    h2,
    .section-title-sm {
        font-size: calc(1.55rem * var(--font-scale-heading));
    }

    .section {
        padding: 52px 0;
    }

    .section-tight {
        padding: 24px 0;
    }

    .container,
    .container-wide,
    .container-admin,
    .container-auth,
    .container-reading {
        width: min(100% - 1.2rem, var(--container-wide));
    }

    .hero-actions,
    .header-actions,
    .page-head__actions,
    .dashboard-topbar__actions {
        width: 100%;
    }

    .btn {
        width: 100%;
    }
}