/* SA Cargo — Login CSS  */
/* No Bootstrap. Pure custom. Desktop + tablet only. */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Variables ─────────────────────────────────────────────── */
:root {
    --bg:          #eef1f6;
    --card:        #ffffff;
    --border:      #dde2ea;
    --text:        #1a1f2e;
    --muted:       #6b7280;
    --light:       #9ca3af;
    --accent:      #0f4c8a;
    --accent2:     #1a6bbf;
    --accent-glow: rgba(15,76,138,0.13);
    --admin-c:     #1e3a5f;
    --admin-glow:  rgba(30,58,95,0.13);
    --err:         #dc2626;
    --err-bg:      rgba(220,38,38,0.08);
    --warn-bg:     rgba(217,119,6,0.08);
    --warn-c:      #b45309;
    --input-bg:    #f7f8fb;
    --shadow:      0 24px 64px rgba(0,0,0,0.09), 0 4px 16px rgba(0,0,0,0.06);
    --r:           13px;
    --font-h:      'Syne', sans-serif;
    --font-b:      'DM Sans', sans-serif;
    --tab-h:       52px;
}
[data-theme="dark"] {
    --bg:          #0d1117;
    --card:        #161b22;
    --border:      #30363d;
    --text:        #e6edf3;
    --muted:       #8b949e;
    --light:       #6e7681;
    --accent:      #3b82f6;
    --accent2:     #60a5fa;
    --accent-glow: rgba(59,130,246,0.18);
    --admin-c:     #60a5fa;
    --admin-glow:  rgba(59,130,246,0.18);
    --input-bg:    #0d1117;
    --shadow:      0 24px 64px rgba(0,0,0,0.45), 0 4px 16px rgba(0,0,0,0.3);
}

body {
    font-family: var(--font-b);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .3s, color .3s;
}

/* ── Background ──────────────────────────────────────────────  */
.bg-wrap { position: fixed; inset: 0; pointer-events: none; z-index: 0; }

.bg-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(15,76,138,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15,76,138,.035) 1px, transparent 1px);
    background-size: 44px 44px;
}
[data-theme="dark"] .bg-grid {
    background-image:
        linear-gradient(rgba(59,130,246,.055) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,.055) 1px, transparent 1px);
}

.bg-glow {
    position: absolute;
    top: -180px; left: 50%; transform: translateX(-50%);
    width: 800px; height: 800px; border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 68%);
}

/* ── Theme button ─────────────────────────────────────────── */
.btn-theme {
    position: fixed; top: 18px; right: 18px;
    background: var(--card); border: 1px solid var(--border);
    border-radius: 50px; padding: 7px 14px;
    font-size: 15px; color: var(--text);
    cursor: pointer; transition: transform .2s;
    z-index: 100; box-shadow: 0 2px 8px rgba(0,0,0,.07);
}
.btn-theme:hover { transform: scale(1.06); }
[data-theme="light"] .moon,
[data-theme="dark"]  .sun  { display: none; }

/* ── Login wrap ───────────────────────────────────────────── */
.login-wrap {
    position: relative; z-index: 1;
    display: flex; flex-direction: column; align-items: center;
    padding: 24px;
    width: 100%;
}

/* ── Card ─────────────────────────────────────────────────── */
.login-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    width: 100%; max-width: 460px;
    box-shadow: var(--shadow);
    overflow: hidden;
    animation: cardIn .5s cubic-bezier(.16,1,.3,1) both;
}
@keyframes cardIn {
    from { opacity: 0; transform: translateY(22px) scale(.97); }
    to   { opacity: 1; transform: none; }
}

.card-accent {
    height: 4px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent2) 100%);
}

.card-body { padding: 40px 40px 32px; }

/* ── Logo ─────────────────────────────────────────────────── */
.logo-block { text-align: center; margin-bottom: 28px; }
.logo-img   { max-height: 52px; margin-bottom: 10px; }

.logo-fallback {
    display: none; justify-content: center; align-items: baseline;
    gap: 5px; margin-bottom: 10px;
}
.l-sa    { font-family: var(--font-h); font-size: 40px; font-weight: 800; color: var(--accent); letter-spacing: -1px; }
.l-cargo { font-family: var(--font-h); font-size: 31px; font-weight: 600; color: var(--text); letter-spacing: 3px; }
.logo-sub { font-size: 11.5px; color: var(--muted); text-transform: uppercase; letter-spacing: 1.5px; }

/* ── Notices ──────────────────────────────────────────────── */
.notice {
    display: flex; align-items: flex-start; gap: 9px;
    padding: 11px 14px; border-radius: 9px;
    font-size: 13.5px; margin-bottom: 16px;
    animation: fadeD .3s ease;
}
.notice.error { background: var(--err-bg); color: var(--err); border: 1px solid rgba(220,38,38,.2); }
.notice.warn  { background: var(--warn-bg); color: var(--warn-c); border: 1px solid rgba(217,119,6,.2); }
@keyframes fadeD { from { opacity:0; transform:translateY(-5px); } to { opacity:1; transform:none; } }

/* ── Tab bar ──────────────────────────────────────────────── */
.tab-bar {
    display: flex; gap: 0;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 11px; padding: 4px;
    margin-bottom: 24px;
}
.tab-btn {
    flex: 1; height: 40px;
    background: none; border: none;
    border-radius: 8px;
    font-family: var(--font-b); font-size: 13.5px; font-weight: 500;
    color: var(--muted); cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 7px;
    transition: background .2s, color .2s, box-shadow .2s;
}
.tab-btn.active {
    background: var(--card);
    color: var(--accent);
    box-shadow: 0 1px 4px rgba(0,0,0,.1), 0 0 0 1px var(--border);
    font-weight: 600;
}
.tab-btn:not(.active):hover { color: var(--text); }

/* ── Tab panels ───────────────────────────────────────────── */
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeD .25s ease; }

.admin-notice {
    display: flex; align-items: center; gap: 8px;
    font-size: 12.5px; color: var(--admin-c);
    background: var(--admin-glow);
    border: 1px solid rgba(30,58,95,.15);
    border-radius: 8px; padding: 9px 14px;
    margin-bottom: 16px;
    font-weight: 500;
}
[data-theme="dark"] .admin-notice { border-color: rgba(96,165,250,.2); }

/* ── Fields ───────────────────────────────────────────────── */
.field { margin-bottom: 18px; }

.field label {
    display: block;
    font-size: 11.5px; font-weight: 600;
    color: var(--muted);
    text-transform: uppercase; letter-spacing: .7px;
    margin-bottom: 7px;
    transition: color .2s;
}
.field:focus-within label { color: var(--accent); }

.field-inner {
    position: relative; display: flex; align-items: center;
}

.f-icon {
    position: absolute; left: 13px;
    font-size: 14px; color: var(--light);
    pointer-events: none;
}

.field-inner input {
    width: 100%; padding: 12px 38px 12px 36px;
    background: var(--input-bg);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-family: var(--font-b); font-size: 14.5px; color: var(--text);
    outline: none;
    transition: border-color .2s, box-shadow .2s, background .2s;
}
.field-inner input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3.5px var(--accent-glow);
    background: var(--card);
}

.btn-eye {
    position: absolute; right: 11px;
    background: none; border: none; cursor: pointer;
    font-size: 15px; opacity: .45; transition: opacity .2s;
    padding: 4px; color: var(--text);
}
.btn-eye:hover { opacity: .9; }

/* ── Remember me ─────────────────────────────────────────── */
.field-row { margin-bottom: 20px; }

.check-label {
    display: flex; align-items: center; gap: 9px;
    font-size: 13.5px; color: var(--muted); cursor: pointer;
    user-select: none;
}
.check-label input[type="checkbox"] { display: none; }
.check-box {
    width: 18px; height: 18px; flex-shrink: 0;
    border: 1.5px solid var(--border); border-radius: 5px;
    background: var(--input-bg);
    display: flex; align-items: center; justify-content: center;
    transition: background .2s, border-color .2s;
    font-size: 11px; color: #fff;
}
.check-label input:checked ~ .check-box {
    background: var(--accent); border-color: var(--accent);
}
.check-label input:checked ~ .check-box::after { content: '✓'; }

/* ── Submit button ────────────────────────────────────────── */
.btn-submit {
    width: 100%; padding: 13.5px;
    background: var(--accent); color: #fff;
    border: none; border-radius: 11px;
    font-family: var(--font-h); font-size: 15px; font-weight: 700;
    letter-spacing: .3px; cursor: pointer;
    transition: background .2s, transform .15s, box-shadow .2s;
    position: relative;
}
.btn-submit:hover  { background: var(--accent2); box-shadow: 0 4px 18px var(--accent-glow); }
.btn-submit:active { transform: scale(.99); }

.btn-admin { background: var(--admin-c); }
.btn-admin:hover { background: #274d77; }
[data-theme="dark"] .btn-admin { background: var(--accent); }
[data-theme="dark"] .btn-admin:hover { background: var(--accent2); }

.btn-spin { letter-spacing: 4px; animation: pulse 1s infinite; }
@keyframes pulse { 0%,100%{opacity:.3}50%{opacity:1} }

/* ── Card footer ─────────────────────────────────────────── */
.card-footer {
    margin-top: 26px; padding-top: 18px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 12.5px; color: var(--light);
    line-height: 1.6;
}

/* ── Version tag ─────────────────────────────────────────── */
.version-tag {
    margin-top: 20px;
    font-size: 11px; color: var(--light);
    letter-spacing: 1px; text-transform: uppercase;
    opacity: .6;
}