/* Design tokens — see docs/design-system.md.
   Components consume tokens only; no raw hex or raw px in scoped styles. */

:root {
    --bg: #ffffff;
    --surface: #f6f7f9;
    --surface-elevated: #ffffff;
    --border: #e3e5ea;
    --border-strong: #c8ccd4;
    --text: #16181d;
    --text-muted: #5b6168;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-contrast: #ffffff;
    --primary-soft-bg: rgb(37 99 235 / 0.08);
    --danger: #b00020;
    --danger-soft-bg: #fff5f5;
    --success: #0a7d2c;
    --warning-soft-bg: #fff5d6;
    --warning-border: #d6a800;
    --focus-ring: #2563eb;
    --focus-ring-soft: rgb(37 99 235 / 0.25);

    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.06);
    --shadow-md: 0 2px 8px rgb(0 0 0 / 0.08);

    --font-stack: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;

    --font-xs: 0.75rem;
    --font-sm: 0.875rem;
    --font-base: 1rem;
    --font-lg: 1.125rem;
    --font-xl: 1.5rem;
    --font-2xl: 2rem;

    --leading-tight: 1.3;
    --leading-snug: 1.45;
    --leading-normal: 1.55;

    --weight-regular: 400;
    --weight-medium: 500;
    --weight-semibold: 600;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --radius-pill: 999px;

    --transition: 120ms ease-out;

    --icon-sm: 14px;
    --icon-md: 18px;
    --icon-lg: 22px;

    --z-dropdown: 10;
    --z-sticky: 50;
    --z-modal: 100;
    --z-toast: 1000;
}

:root[data-theme='dark'] {
    --bg: #0f1115;
    --surface: #161a21;
    --surface-elevated: #1c2129;
    --border: #2a2f37;
    --border-strong: #3a414d;
    --text: #e8eaed;
    --text-muted: #9aa0a6;
    --primary: #60a5fa;
    --primary-hover: #3b82f6;
    --primary-contrast: #0f1115;
    --primary-soft-bg: rgb(96 165 250 / 0.12);
    --danger: #f87171;
    --danger-soft-bg: #3a1620;
    --success: #4ade80;
    --warning-soft-bg: #3a2e10;
    --warning-border: #a37800;
    --focus-ring: #60a5fa;
    --focus-ring-soft: rgb(96 165 250 / 0.3);

    --shadow-sm: 0 1px 2px rgb(0 0 0 / 0.4);
    --shadow-md: 0 2px 8px rgb(0 0 0 / 0.5);
}

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

html,
body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-stack);
    font-size: var(--font-base);
    line-height: var(--leading-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3 {
    color: var(--text);
    line-height: var(--leading-tight);
    font-weight: var(--weight-semibold);
    margin: 0 0 var(--space-3);
}

h1 {
    font-size: var(--font-2xl);
}

h2 {
    font-size: var(--font-xl);
}

h3 {
    font-size: var(--font-lg);
}

p {
    margin: 0 0 var(--space-3);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role='button']:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

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

input[type='text'],
input[type='search'],
input[type='password'],
input[type='number'],
input[type='email'],
select,
textarea {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: 0 var(--space-3);
    height: 36px;
    width: 100%;
    transition:
        border-color var(--transition),
        background var(--transition),
        box-shadow var(--transition);
}

textarea {
    height: auto;
    min-height: 6rem;
    padding: var(--space-2) var(--space-3);
    line-height: var(--leading-snug);
    resize: vertical;
}

input[type='text']:focus,
input[type='search']:focus,
input[type='password']:focus,
input[type='number']:focus,
input[type='email']:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--surface-elevated);
    box-shadow: 0 0 0 3px var(--focus-ring-soft);
}

input[aria-invalid='true'],
select[aria-invalid='true'],
textarea[aria-invalid='true'] {
    border-color: var(--danger);
}

input:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button {
    cursor: pointer;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 0 var(--space-3);
    height: 36px;
    font-weight: var(--weight-medium);
    color: var(--text);
    transition:
        background var(--transition),
        border-color var(--transition),
        color var(--transition);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

::placeholder {
    color: var(--text-muted);
    opacity: 1;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    font-size: var(--font-sm);
    color: var(--text);
}

img {
    max-width: 100%;
    height: auto;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0ms !important;
        animation-duration: 0ms !important;
    }
}