/* ============================================================================
   gesdpo — core.css
   Structural baseline shared by all platform core UI (login, landing, admin).
   The core has NO theme engine — the palette below is fixed and neutral.
   Modules own their own look (e.g. the projectos module ships its own themes).
   ============================================================================ */

/* ── Core palette (fixed, neutral) ─────────────────────────────────────────── */
:root {
    --color-bg:           #f4f5f7;
    --color-bg-alt:       #eceef1;
    --color-surface:      #ffffff;
    --color-border:       #e2e5e9;
    --color-text:         #1f2933;
    --color-text-muted:   #6b7280;
    --color-primary:      #2563eb;
    --color-primary-hi:   #1d4ed8;
    --color-success:      #16a34a;
    --color-warning:      #d97706;
    --color-danger:       #dc2626;
    --color-link:         #2563eb;
    --color-header-bg:    #1f2933;
    --color-header-text:  #ffffff;
    --color-sidebar-bg:   #f8f9fb;
    --color-sidebar-text: #374151;
    --color-input-bg:     #ffffff;
    --color-input-border: #cbd2d9;
    --color-card-shadow:  0 1px 3px rgba(0, 0, 0, 0.08);

    --font-body:    'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-mono:    Consolas, 'Courier New', monospace;

    --radius-sm:  4px;
    --radius-md:  6px;
    --radius-lg:  10px;
    --space-xs:   4px;
    --space-sm:   8px;
    --space-md:   14px;
    --space-lg:   20px;
    --space-xl:   32px;
}

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

html, body { height: 100%; }

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text);
    margin: 0 0 12px;
    line-height: 1.25;
}
h1 { font-size: 24px; font-weight: 700; }
h2 { font-size: 18px; font-weight: 600; }
h3 { font-size: 15px; font-weight: 600; }

a {
    color: var(--color-link);
    text-decoration: none;
}
a:hover { text-decoration: underline; }

code, pre, kbd {
    font-family: var(--font-mono);
    font-size: 0.92em;
}

hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 20px 0;
}

/* ── Forms ─────────────────────────────────────────────────────────────────── */
input, select, textarea {
    font: inherit;
    color: var(--color-text);
    background: var(--color-input-bg);
    border: 1px solid var(--color-input-border);
    border-radius: var(--radius-md);
    padding: 8px 11px;
    transition: border-color 0.12s, box-shadow 0.12s;
    width: 100%;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 20%, transparent);
}

label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--color-text);
}

/* ── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
    text-decoration: none;
    line-height: 1;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-primary {
    background: var(--color-primary);
    color: var(--color-header-text);
    border-color: var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-hi); border-color: var(--color-primary-hi); }

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}
.btn-secondary:hover { background: var(--color-bg-alt); }

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

.btn-link {
    background: none;
    color: var(--color-link);
    border: none;
    padding: 0;
    font-weight: 500;
}
.btn-link:hover { text-decoration: underline; }

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    box-shadow: var(--color-card-shadow);
}
.card h2 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
    margin: 0 0 var(--space-sm);
}

/* ── Layout primitives ─────────────────────────────────────────────────────── */
.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: var(--color-header-bg);
    color: var(--color-header-text);
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.app-header h1 {
    color: var(--color-header-text);
    font-size: 16px;
    margin: 0;
    font-weight: 700;
}
.app-header a { color: var(--color-header-text); }

.app-main {
    flex: 1;
    padding: 24px;
    background: var(--color-bg);
}

/* ── Pills / badges ────────────────────────────────────────────────────────── */
.pill {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}
.pill-success { background: color-mix(in srgb, var(--color-success) 18%, transparent); color: var(--color-success); border-color: transparent; }
.pill-warn    { background: color-mix(in srgb, var(--color-warning) 22%, transparent); color: var(--color-warning); border-color: transparent; }
.pill-danger  { background: color-mix(in srgb, var(--color-danger)  18%, transparent); color: var(--color-danger);  border-color: transparent; }

/* ── Flash messages (login, etc.) ──────────────────────────────────────────── */
.flash {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 13px;
    margin-bottom: 14px;
    border: 1px solid var(--color-border);
}
.flash-error   { background: color-mix(in srgb, var(--color-danger)  10%, var(--color-surface)); color: var(--color-danger);  border-color: var(--color-danger); }
.flash-success { background: color-mix(in srgb, var(--color-success) 10%, var(--color-surface)); color: var(--color-success); border-color: var(--color-success); }
.flash-info    { background: color-mix(in srgb, var(--color-primary) 10%, var(--color-surface)); color: var(--color-primary); border-color: var(--color-primary); }

/* ── Theme swatches (live picker) ──────────────────────────────────────────── */
.theme-swatches {
    display: inline-flex;
    gap: 8px;
}
.theme-swatch {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    padding: 0;
    transition: transform 0.12s, border-color 0.12s;
}
.theme-swatch:hover { transform: scale(1.1); }
.theme-swatch.active { border-color: var(--color-primary); transform: scale(1.1); }