/* ReadyKit PH - base styles: design tokens, reset, typography, layout, buttons, forms, badges.
   Component and page styles live in css/components/ and css/pages/. */

:root {
    /* Color */
    --color-bg: #ffffff;
    --color-surface: #f8fafc;
    --color-surface-2: #f1f5f9;
    --color-text: #0f172a;
    --color-text-muted: #475569;
    --color-border: #e2e8f0;
    --color-primary: #1d4ed8;
    --color-primary-hover: #1e40af;
    --color-primary-soft: #eff6ff;
    --color-accent: #f59e0b;
    --color-success: #166534;
    --color-success-soft: #f0fdf4;
    --color-danger: #b91c1c;
    --color-danger-soft: #fef2f2;
    --color-warning: #92400e;
    --color-warning-soft: #fffbeb;
    --color-info: #1e40af;
    --color-info-soft: #eff6ff;

    /* Typography */
    --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;

    /* Shape and depth */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4.5rem;

    /* Layout */
    --container-max: 1160px;
    --container-narrow: 720px;
    --header-height: 64px;
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
}

img, svg, video { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a { color: var(--color-primary); }
a:hover { color: var(--color-primary-hover); }

:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

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

/* Accessibility helpers */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    left: var(--space-4);
    top: -100px;
    z-index: 100;
    padding: var(--space-2) var(--space-4);
    background: var(--color-text);
    color: #fff;
    border-radius: var(--radius-sm);
}
.skip-link:focus { top: var(--space-2); color: #fff; }

/* Layout */
.site-main { flex: 1 0 auto; }

.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-4);
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--space-7); }
.section--tight { padding-block: var(--space-5); }
.section--alt { background: var(--color-surface); }

@media (min-width: 768px) {
    .container { padding-inline: var(--space-5); }
    .section { padding-block: var(--space-8); }
}

/* Typography */
.page-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.page-lead {
    margin-top: var(--space-3);
    margin-bottom: var(--space-5);
    font-size: var(--text-lg);
    color: var(--color-text-muted);
}

/* Buttons: minimum 44px touch target */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0.625rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-hover); color: #fff; }
.btn--secondary { background: var(--color-bg); color: var(--color-text); border-color: var(--color-border); }
.btn--secondary:hover { background: var(--color-surface-2); color: var(--color-text); }
.btn--ghost { background: transparent; color: var(--color-primary); }
.btn--ghost:hover { background: var(--color-primary-soft); }
.btn--sm { min-height: 40px; padding: 0.5rem 1rem; font-size: var(--text-sm); }
.btn--lg { min-height: 52px; padding: 0.875rem 1.75rem; font-size: var(--text-lg); }
.btn--block { display: flex; width: 100%; }
.btn[disabled], .btn.is-loading { opacity: 0.6; cursor: not-allowed; }

/* Forms */
.form-field { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-4); }
.form-label { font-weight: 600; font-size: var(--text-sm); }
.form-input,
.form-select,
.form-textarea {
    width: 100%;
    min-height: 44px;
    padding: 0.625rem 0.875rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}
.form-textarea { min-height: 120px; resize: vertical; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form-help { font-size: var(--text-sm); color: var(--color-text-muted); }
.form-error { font-size: var(--text-sm); color: var(--color-danger); }
.form-input.is-invalid { border-color: var(--color-danger); }

/* Badges */
.badge {
    display: inline-block;
    padding: 0.125rem 0.625rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: var(--color-surface-2);
    color: var(--color-text-muted);
}
.badge--success { background: var(--color-success-soft); color: var(--color-success); }
.badge--danger { background: var(--color-danger-soft); color: var(--color-danger); }
.badge--warning { background: var(--color-warning-soft); color: var(--color-warning); }
.badge--primary { background: var(--color-primary-soft); color: var(--color-primary); }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Checkbox rows */
.form-check { display: flex; align-items: flex-start; gap: var(--space-3); cursor: pointer; font-weight: 600; }
.form-check__input { flex: none; width: 20px; height: 20px; margin-top: 2px; accent-color: var(--color-primary); }