/* =========================================================
   ADMIN LOGIN — Utopia Control Center
   Glass-morphism card on animated sky-to-blue gradient.
   Uses CSS variables from styles.css for theme harmony.
   ========================================================= */

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
}

/* Animated gradient orbs in the background */
.login-bg {
    position: fixed;
    inset: 0;
    overflow: hidden;
    z-index: 0;
    background: var(--bg-primary);
}
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.55;
    pointer-events: none;
}
.orb-1 {
    width: 480px; height: 480px;
    top: -120px; left: -120px;
    background: var(--sky-500);
    animation: float-1 16s ease-in-out infinite;
}
.orb-2 {
    width: 520px; height: 520px;
    bottom: -160px; right: -160px;
    background: var(--blue-500);
    animation: float-2 22s ease-in-out infinite;
}
.orb-3 {
    width: 380px; height: 380px;
    top: 40%; left: 50%;
    transform: translate(-50%, -50%);
    background: var(--blue-400);
    opacity: 0.30;
    animation: float-3 26s ease-in-out infinite;
}
@keyframes float-1 {
    0%,100% { transform: translate(0,0); }
    50% { transform: translate(60px, 40px); }
}
@keyframes float-2 {
    0%,100% { transform: translate(0,0); }
    50% { transform: translate(-50px, -60px); }
}
@keyframes float-3 {
    0%,100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.15); }
}

/* Main shell — centered card */
.login-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 440px;
    background: var(--glass-bg);
    backdrop-filter: blur(28px) saturate(150%);
    -webkit-backdrop-filter: blur(28px) saturate(150%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.45),
        0 0 0 1px rgba(59, 130, 246, 0.10),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    padding: 40px 36px 28px;
    animation: card-in 0.5s var(--ease-out) both;
}
@keyframes card-in {
    from { opacity: 0; transform: translateY(20px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Brand header */
.login-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}
.brand-mark {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-xl);
    background: var(--gradient-primary);
    display: grid;
    place-items: center;
    box-shadow: var(--glow-md), 0 8px 24px rgba(14, 165, 233, 0.35);
    overflow: hidden;
}
.brand-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.35));
}
.brand-text { text-align: center; }
.brand-text h1 {
    margin: 0;
    font-family: 'Inter', 'Inter', sans-serif;
    font-size: 1.625rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.brand-sub {
    margin: 4px 0 0;
    font-size: 0.875rem;
    color: var(--text-tertiary);
    letter-spacing: -0.02em;
    text-transform: uppercase;
    font-weight: 500;
}

/* Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    padding-left: 4px;
}
.field-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(15, 20, 32, 0.55);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: all 0.2s var(--ease-out);
}
.field-input-wrap:focus-within {
    border-color: var(--sky-500);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.16), var(--glow-sm);
}
.field-icon {
    color: var(--text-tertiary);
    margin: 0 8px 0 14px;
    font-size: 20px !important;
}
.field input {
    flex: 1;
    background: transparent;
    border: 0;
    outline: 0;
    padding: 14px 14px 14px 0;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
}
.field input::placeholder { color: var(--text-muted); }
.reveal-btn {
    background: transparent;
    border: 0;
    color: var(--text-tertiary);
    padding: 0 12px;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: color 0.15s;
}
.reveal-btn:hover { color: var(--text-primary); }
.reveal-btn .material-symbols-outlined { font-size: 20px; }
.field-hint {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    padding-left: 4px;
    min-height: 14px;
    margin-top: 2px;
    font-family: 'Inter', sans-serif;
}

/* Submit button */
.submit-btn {
    position: relative;
    margin-top: 8px;
    padding: 14px 20px;
    border: 0;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    color: #fff;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    box-shadow: var(--glow-sm), 0 6px 16px rgba(14, 165, 233, 0.25);
    overflow: hidden;
}
.submit-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    background: var(--gradient-hover);
    box-shadow: var(--glow-md), 0 10px 24px rgba(14, 165, 233, 0.35);
}
.submit-btn:active:not(:disabled) {
    transform: translateY(0);
}
.submit-btn:disabled { opacity: 0.7; cursor: wait; }
.submit-btn .submit-spinner {
    display: none;
    width: 16px; height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    margin-left: 10px;
    vertical-align: middle;
    animation: spin 0.7s linear infinite;
}
.submit-btn.loading .submit-spinner { display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Messages */
.error-box, .rate-box {
    margin-top: 4px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
}
.error-box {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #fca5a5;
}
.rate-box {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.35);
    color: #fcd34d;
}

/* Footer */
.login-footer {
    margin-top: 28px;
    text-align: center;
}
.footer-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: var(--radius-full);
    background: rgba(16, 185, 129, 0.10);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: var(--accent-green);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}
.footer-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%,100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.footer-help {
    margin: 10px 0 0;
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Light theme */
[data-theme="light"] .login-card {
    background: rgba(255, 255, 255, 0.85);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.12),
        0 0 0 1px rgba(59, 130, 246, 0.10);
}
[data-theme="light"] .field-input-wrap {
    background: #fff;
    border-color: rgba(59, 130, 246, 0.20);
}
[data-theme="light"] .error-box { color: #b91c1c; }
[data-theme="light"] .rate-box { color: #b45309; }

/* Responsive */
@media (max-width: 480px) {
    .login-card { padding: 32px 22px 22px; border-radius: var(--radius-xl); }
    .brand-text h1 { font-size: 1.4rem; }
}