/* ============================================================
   admin.css — minimal, functional admin styles.
   Plain hand-rolled CSS. No framework. Override / replace as we
   harden the visual design later.
   ============================================================ */

:root {
    --c-bg:           #f5f6f8;
    --c-surface:      #ffffff;
    --c-border:       #e2e5ea;
    --c-text:         #1a2330;
    --c-text-soft:    #5a6473;
    --c-link:         #2566d6;
    --c-link-hover:   #1a4ea8;
    --c-success-bg:   #e6f4ea;
    --c-success-fg:   #1a6c3a;
    --c-error-bg:     #fde7e7;
    --c-error-fg:     #9a1c1c;
    --c-warn-bg:      #fff5d6;
    --c-warn-fg:      #7a5b00;
    --c-info-bg:      #e8f0fc;
    --c-info-fg:      #1a4ea8;
    --c-sidebar:      #1d2433;
    --c-sidebar-soft: #2b3346;
    --c-sidebar-text: #c7cbd6;
    --c-sidebar-fade: #7d8597;
    --r:              6px;
    --gap:            16px;
    --font-stack:     -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--c-bg);
    color: var(--c-text);
    font-family: var(--font-stack);
    font-size: 14px;
    line-height: 1.5;
}

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

/* ---------- Layout ---------- */

.layout-app {
    display: grid;
    grid-template-columns: 240px 1fr;
    min-height: 100vh;
}
.layout-bare {
    min-height: 100vh;
    display: grid;
    place-items: center;
}

.main {
    padding: 24px 32px;
    overflow-x: auto;
}
.main--bare { width: 100%; max-width: 360px; }

/* ---------- Sidebar ---------- */

.sidebar {
    background: var(--c-sidebar);
    color: var(--c-sidebar-text);
    display: flex;
    flex-direction: column;
    padding: 16px 0;
    position: sticky;
    top: 0;
    height: 100vh;
}
.sidebar__brand {
    padding: 0 20px 16px;
    border-bottom: 1px solid var(--c-sidebar-soft);
    margin-bottom: 12px;
}
.sidebar__brand a {
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
}
.sidebar__brand-suffix { color: var(--c-sidebar-fade); font-weight: 400; }
.sidebar__brand small {
    display: block;
    color: var(--c-sidebar-fade);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 2px;
}

.nav { display: flex; flex-direction: column; padding: 0 8px; }
.nav__group {
    color: var(--c-sidebar-fade);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 14px 12px 6px;
}
.nav__link {
    color: var(--c-sidebar-text);
    padding: 7px 12px;
    border-radius: 4px;
    text-decoration: none;
    font-size: 13px;
}
.nav__link:hover { background: var(--c-sidebar-soft); color: #fff; text-decoration: none; }
.nav__link--active { background: var(--c-sidebar-soft); color: #fff; }

.sidebar__footer { margin-top: auto; padding: 12px 20px; border-top: 1px solid var(--c-sidebar-soft); }
.sidebar__user-name { color: #fff; font-size: 13px; }
.sidebar__logout { color: var(--c-sidebar-fade); font-size: 12px; }

/* ---------- Page header ---------- */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 20px;
    gap: 16px;
}
.page-header__title { margin: 0; font-size: 20px; font-weight: 600; }
.page-header__sub   { color: var(--c-text-soft); margin: 2px 0 0; font-size: 13px; }
.page-header__actions { display: flex; gap: 8px; }

/* ---------- Cards / surfaces ---------- */

.card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--r);
    padding: 20px;
    margin-bottom: var(--gap);
}
.card__title { font-size: 14px; font-weight: 600; margin: 0 0 12px; }

/* ---------- Tables ---------- */

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--r);
    overflow: hidden;
}
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--c-border); }
.table th { background: #fafbfc; font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--c-text-soft); }
.table tr:last-child td { border-bottom: 0; }
.table tr:hover td { background: #fafbfc; }
.table__actions { text-align: right; white-space: nowrap; }
.table__empty { text-align: center; padding: 32px; color: var(--c-text-soft); }

/* ---------- Forms ---------- */

.form { display: grid; gap: 14px; max-width: 720px; }
.form__row { display: flex; flex-direction: column; gap: 4px; }
.form__row--inline { flex-direction: row; align-items: center; gap: 10px; }
.form__label { font-size: 12px; font-weight: 600; color: var(--c-text-soft); text-transform: uppercase; letter-spacing: 0.04em; }
.form__input, .form__textarea, .form__select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--c-border);
    border-radius: 4px;
    font: inherit;
    background: var(--c-surface);
    color: var(--c-text);
}
.form__input:focus, .form__textarea:focus, .form__select:focus {
    outline: 2px solid var(--c-link);
    outline-offset: -1px;
    border-color: var(--c-link);
}
.form__textarea { min-height: 100px; resize: vertical; }
.form__hint { color: var(--c-text-soft); font-size: 12px; }
.form__actions { display: flex; gap: 8px; justify-content: flex-end; padding-top: 8px; border-top: 1px solid var(--c-border); }
.form__row--inline .form__label { margin: 0; }

/* ---------- Buttons ---------- */

.btn {
    display: inline-block;
    padding: 7px 14px;
    border: 1px solid transparent;
    border-radius: 4px;
    font: inherit;
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
    background: var(--c-surface);
    color: var(--c-text);
    border-color: var(--c-border);
}
.btn:hover { background: #fafbfc; text-decoration: none; }
.btn--primary { background: var(--c-link); color: #fff; border-color: var(--c-link); }
.btn--primary:hover { background: var(--c-link-hover); border-color: var(--c-link-hover); color: #fff; }
.btn--danger { background: #c93636; color: #fff; border-color: #c93636; }
.btn--danger:hover { background: #a82a2a; border-color: #a82a2a; color: #fff; }
.btn--small { padding: 4px 8px; font-size: 12px; }
.btn--link { background: transparent; border: 0; padding: 0; color: var(--c-link); }
.btn--link:hover { text-decoration: underline; }

/* ---------- Flash messages ---------- */

.flash { display: grid; gap: 8px; margin-bottom: var(--gap); }
.flash__item { padding: 10px 12px; border-radius: 4px; font-size: 13px; }
.flash__item--success { background: var(--c-success-bg); color: var(--c-success-fg); }
.flash__item--error   { background: var(--c-error-bg);   color: var(--c-error-fg); }
.flash__item--warning { background: var(--c-warn-bg);    color: var(--c-warn-fg); }
.flash__item--info    { background: var(--c-info-bg);    color: var(--c-info-fg); }

/* ---------- Login page ---------- */

.login-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--r);
    padding: 24px;
}
.login-card h1 { margin: 0 0 4px; font-size: 18px; }
.login-card p  { margin: 0 0 16px; color: var(--c-text-soft); font-size: 13px; }

/* ---------- Utility ---------- */

.muted { color: var(--c-text-soft); }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.tag {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 10px;
    background: #eaeef5;
    color: var(--c-text-soft);
    font-size: 11px;
    font-weight: 500;
}