/* Life Balance — Base Stylesheet
   Safari 26 baseline: CSS nesting, :has(), container queries, OKLCH */

/* ── Custom Properties ── */

:root {
    --color-text: oklch(0.252 0 89.88 / 0.43);
    --color-text-muted: oklch(0.5 0 0);
    --color-text-hint: oklch(0.6 0 0);
    --color-border: oklch(0.9 0 0);
    --color-bg: oklch(0.97 0 0);
    --color-surface: oklch(1 0 0);
    --color-accent: oklch(0.45 0.2 250);
    --color-accent-hover: oklch(0.4 0.2 250);
    --color-accent-active: oklch(0.35 0.2 250);
    --color-accent-focus: oklch(0.55 0.2 250);
    --color-error-bg: oklch(0.95 0.05 25);
    --color-error-text: oklch(0.4 0.15 25);
    --color-red: #F00;
    --max-width: 800px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

/* ── Reset ── */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* ── Base Typography ── */

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

/* ── Top Nav ── */

.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border);
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;

    &:hover {
        color: var(--color-accent);
    }
}

.nav-logout {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--color-text-muted);
    cursor: pointer;

    &:hover {
        background: var(--color-bg);
        color: var(--color-text);
    }
}

/* ── Main Content ── */

main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem;
}

/* ── Footer ── */

.site-footer {
    max-width: var(--max-width);
    margin: 2rem auto 0;
    padding: 1rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-text-hint);
}

/* ═══════════════════════════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════════════════════════
   Reusable component classes for consistent design across all pages.
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Empty States ── */

.empty-state {
    padding: 3rem 2rem;
    text-align: center;
    color: oklch(0.5 0 0);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    opacity: 0.3;
}

.empty-state p {
    margin-bottom: 1.5rem;
}

/* ── Buttons ── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    background: none;
    font-family: inherit;
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
}

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

.btn-secondary {
    background: transparent;
    border-color: oklch(0.85 0 0);
    color: oklch(0.4 0 0);
}

.btn-secondary:hover {
    background: oklch(0.97 0 0);
}

.btn-danger {
    background: oklch(0.55 0.22 25);
    color: white;
}

.btn-danger:hover {
    background: oklch(0.48 0.22 25);
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-accent);
    padding: 0;
    text-decoration: underline;
    cursor: pointer;
}

.btn-link:hover {
    color: var(--color-accent-hover);
}

/* ── Form Elements ── */

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: oklch(0.4 0 0);
}

.form-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid oklch(0.85 0 0);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px oklch(from var(--color-accent) l c h / 0.1);
}

/* ── Badges ── */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-view {
    background: oklch(0.95 0.05 250);
    color: oklch(0.45 0.15 250);
}

.badge-check {
    background: oklch(0.95 0.08 150);
    color: oklch(0.40 0.15 150);
}

.badge-edit {
    background: oklch(0.95 0.08 60);
    color: oklch(0.40 0.15 60);
}

/* ── Cards ── */

.card {
    background: white;
    border: 1px solid oklch(0.9 0 0);
    border-radius: 0.5rem;
    padding: 1.5rem;
}

/* ── Drag Handle ── */

.drag-handle {
    cursor: grab;
    color: oklch(0.7 0 0);
    transition: color 0.2s;
}

.drag-handle:hover {
    color: oklch(0.4 0 0);
}

.drag-handle:active {
    cursor: grabbing;
}

/* ═══════════════════════════════════════════════════════════════════════════
   PAGE-SPECIFIC STYLES
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Welcome Page ── */

.welcome {
    text-align: center;
    padding: 4rem 1rem;
}

.welcome-heading {
    font-size: 1.5rem;
    font-weight: 600;
    margin-block-end: 0.75rem;
}

.welcome p {
    color: var(--color-text-muted);
    margin-block-end: 0.5rem;
}

.hint {
    font-size: 0.875rem;
    color: var(--color-text-hint);
}

/* ── Auth Pages (Login / Registration) ── */

.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100dvh;
    padding: 1rem;
}

.auth-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 2px 12px oklch(0 0 0 / 0.08);

    & h1 {
        font-size: 1.5rem;
        font-weight: 700;
        text-align: center;
        margin-block-end: 0.25rem;
    }
}

.subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-block-end: 1.5rem;
}

.error {
    background: var(--color-error-bg);
    color: var(--color-error-text);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin-block-end: 1rem;
    font-size: 0.875rem;
}

.form-field {
    margin-block-end: 1rem;

    & label {
        display: block;
        font-size: 0.875rem;
        font-weight: 500;
        margin-block-end: 0.25rem;
    }

    & input {
        width: 100%;
        padding: 0.625rem 0.75rem;
        border: 1px solid oklch(0.85 0 0);
        border-radius: var(--radius-md);
        font-size: 1rem;
        font-family: inherit;

        &:focus {
            outline: 2px solid var(--color-accent-focus);
            outline-offset: -1px;
            border-color: transparent;
        }
    }
}

/* ── Goal Color Palette ── */

:root {
    --goal-color-0: oklch(0.65 0.2 25);
    --goal-color-1: oklch(0.65 0.18 145);
    --goal-color-2: oklch(0.6 0.18 250);
    --goal-color-3: oklch(0.6 0.2 310);
    --goal-color-4: oklch(0.7 0.18 65);
    --goal-color-5: oklch(0.6 0.15 185);
    --goal-color-6: oklch(0.65 0.2 350);
    --goal-color-7: oklch(0.7 0.18 100);
}

/* ── Navigation Links ── */

.nav-links {
    display: flex;
    gap: 1.25rem;
    align-items: center;

    & a {
        font-size: 0.9375rem;
        font-weight: 500;
        color: var(--color-text-muted);
        text-decoration: none;

        &:hover {
            color: var(--color-accent);
        }
    }
}