/* ═══════════════════════════════════════════════════════════════════
   DataHub — Hub frontend CSS
   Design system: BRUNO PAUL portfolio (_shared/DESIGN_SYSTEM.md)
   Prefix: dh-   |   Paleta: --bp-*
   ═══════════════════════════════════════════════════════════════════ */

/* ── Proměnné ─────────────────────────────────────────────────────── */
:root {
    --bp-black:      #111111;
    --bp-black-2:    #2a2a2a;
    --bp-grey-50:    #f7f7f7;
    --bp-grey-100:   #eeeeee;
    --bp-grey-200:   #dddddd;
    --bp-grey-400:   #999999;
    --bp-grey-600:   #555555;
    --bp-white:      #ffffff;
    --bp-gold:       #d4a017;
    --bp-gold-hover: #b8860b;
    --bp-red:        #c53030;
    --bp-green:      #2f855a;
}

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

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    background: var(--bp-grey-50);
    color: var(--bp-black);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ── Header ──────────────────────────────────────────────────────── */
.dh-header {
    background: var(--bp-black);
    padding: 14px 24px;
    border-bottom: 3px solid var(--bp-gold);
    position: sticky;
    top: 0;
    z-index: 100;
}

.dh-header-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 20px;
}

.dh-logo-wrap { text-decoration: none; }

.dh-logo {
    display: block;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--bp-white);
    line-height: 1.1;
}

.dh-logo-img {
    display: block;
    height: 44px;
    width: auto;
    /* logo je tmavé na tmavém headeru — invertujeme na bílou */
    filter: brightness(0) invert(1);
}

.dh-logo-sub {
    display: block;
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--bp-gold);
    margin-top: 2px;
}

.dh-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-left: auto;
}

.dh-nav a {
    text-decoration: none;
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.65);
    padding-bottom: 2px;
    border-bottom: 2px solid transparent;
    transition: color .15s, border-color .15s;
}

.dh-nav a:hover {
    color: var(--bp-white);
    border-color: var(--bp-gold);
}

.dh-nav-user {
    font-size: 12px;
    color: var(--bp-grey-400);
    letter-spacing: .5px;
}

.dh-nav-logout { color: var(--bp-gold) !important; }

/* ── Container ────────────────────────────────────────────────────── */
.dh-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 36px 24px;
}

/* ── Page heading ─────────────────────────────────────────────────── */
.dh-page-title {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.dh-page-sub {
    font-size: 13px;
    color: var(--bp-grey-600);
    margin-bottom: 32px;
}

/* ── Section label ────────────────────────────────────────────────── */
.dh-section-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--bp-grey-400);
    margin-bottom: 12px;
}

/* ── Card ─────────────────────────────────────────────────────────── */
.dh-card {
    background: var(--bp-white);
    border: 1px solid var(--bp-grey-200);
    padding: 24px;
}

/* ── Grid ─────────────────────────────────────────────────────────── */
.dh-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

/* ── Report tile (dashboard) ──────────────────────────────────────── */
.dh-tile {
    background: var(--bp-white);
    border: 1px solid var(--bp-grey-200);
    padding: 28px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-decoration: none;
    color: var(--bp-black);
    transition: border-color .15s, box-shadow .15s;
}

.dh-tile:hover {
    border-color: var(--bp-black);
    text-decoration: none;
}

.dh-tile-num {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--bp-grey-400);
}

.dh-tile-title {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.dh-tile-desc {
    font-size: 13px;
    color: var(--bp-grey-600);
    flex: 1;
}

.dh-tile-cta {
    display: inline-block;
    margin-top: 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--bp-black);
    padding-bottom: 1px;
    border-bottom: 1px solid var(--bp-grey-200);
    transition: border-color .15s;
}

.dh-tile:hover .dh-tile-cta { border-color: var(--bp-gold); }

/* ── Buttons ──────────────────────────────────────────────────────── */
.dh-btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid var(--bp-black);
    background: var(--bp-white);
    color: var(--bp-black);
    cursor: pointer;
    text-decoration: none;
    border-radius: 0;
    transition: background .15s, color .15s, border-color .15s;
    line-height: 1;
}

.dh-btn:hover {
    background: var(--bp-black);
    color: var(--bp-white);
    text-decoration: none;
}

.dh-btn-primary {
    background: var(--bp-black);
    color: var(--bp-white);
    border-color: var(--bp-black);
}

.dh-btn-primary:hover {
    background: var(--bp-gold);
    color: var(--bp-black);
    border-color: var(--bp-gold);
}

.dh-btn-sm { padding: 6px 12px; font-size: 11px; }

/* ── Forms / inputs ───────────────────────────────────────────────── */
.dh-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--bp-grey-600);
    margin-bottom: 6px;
}

.dh-input {
    display: block;
    width: 100%;
    border: 1px solid var(--bp-grey-200);
    background: var(--bp-white);
    padding: 10px 12px;
    font-size: 14px;
    border-radius: 0;
    color: var(--bp-black);
    transition: border-color .15s;
    font-family: inherit;
}

.dh-input:focus {
    outline: none;
    border-color: var(--bp-black);
}

/* ── Alerts / notices ─────────────────────────────────────────────── */
.dh-alert {
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 500;
    border-left: 3px solid;
    margin-bottom: 20px;
}

.dh-alert-error {
    background: #fff5f5;
    border-color: var(--bp-red);
    color: var(--bp-red);
}

.dh-alert-success {
    background: #f0fff4;
    border-color: var(--bp-green);
    color: var(--bp-green);
}

.dh-alert-warning {
    background: #fffbf0;
    border-color: var(--bp-gold);
    color: #7a5c00;
}

/* ── Tables ───────────────────────────────────────────────────────── */
.dh-tbl {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.dh-tbl th {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--bp-grey-600);
    padding: 9px 10px;
    border-bottom: 2px solid var(--bp-grey-100);
    text-align: left;
    white-space: nowrap;
    background: var(--bp-white);
}

.dh-tbl td {
    padding: 8px 10px;
    border-bottom: 1px solid var(--bp-grey-100);
    white-space: nowrap;
    color: var(--bp-black);
}

.dh-tbl tbody tr:last-child td { border-bottom: none; }

.dh-tbl tbody tr:hover td { background: var(--bp-grey-50); }

.dh-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}

/* ── Back link ────────────────────────────────────────────────────── */
.dh-back {
    display: inline-block;
    font-size: 12px;
    color: var(--bp-grey-400);
    text-decoration: none;
    margin-bottom: 20px;
    letter-spacing: .5px;
    transition: color .15s;
}

.dh-back:hover { color: var(--bp-black); }

/* ── Divider ──────────────────────────────────────────────────────── */
.dh-divider {
    border: none;
    border-top: 1px solid var(--bp-grey-100);
    margin: 28px 0;
}

/* ── Status ───────────────────────────────────────────────────────── */
.dh-ok   { color: var(--bp-green); font-weight: 600; }
.dh-bad  { color: var(--bp-red);   font-weight: 600; }
.dh-mono { font-family: Consolas, "SF Mono", Monaco, monospace; font-size: 12px; }

/* ─────────────────────────────────────────────────────────────────── */
/* LOGIN PAGE                                                          */
/* ─────────────────────────────────────────────────────────────────── */

.dh-login-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.dh-login-header {
    background: var(--bp-black);
    padding: 20px 24px;
    border-bottom: 3px solid var(--bp-gold);
}

.dh-login-header-inner {
    max-width: 1280px;
    margin: 0 auto;
}

.dh-login-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
}

.dh-login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bp-white);
    border: 1px solid var(--bp-grey-200);
    padding: 40px;
}

.dh-login-title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
    margin-bottom: 4px;
}

.dh-login-sub {
    font-size: 11px;
    color: var(--bp-grey-400);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 30px;
}

.dh-login-field {
    margin-bottom: 20px;
}

.dh-login-submit {
    width: 100%;
    padding: 13px;
    font-size: 13px;
    margin-top: 4px;
}

.dh-login-remember {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--bp-grey-600);
    margin-top: 14px;
    cursor: pointer;
}

.dh-login-footer {
    text-align: center;
    padding: 20px;
    font-size: 12px;
    color: var(--bp-grey-400);
    letter-spacing: .5px;
}

/* ── Responsive ───────────────────────────────────────────────────── */
@media (max-width: 640px) {
    .dh-container  { padding: 24px 16px; }
    .dh-header     { padding: 12px 16px; }
    .dh-login-card { padding: 28px 24px; }
    .dh-nav-user   { display: none; }
    .dh-page-title { font-size: 22px; }
}