@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --bg-color: #0B0F19;
    /* Deep space navy */
    --card-bg: rgba(16, 23, 35, 0.65);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.15);
    --text-primary: #F8FAFC;
    --text-muted: #94A3B8;
    --accent-brand: #00E5FF;
    /* Cyan */
    --accent-info: #3B82F6;
    /* Bright Blue */
    --accent-danger: #EF4444;
    /* Rose */
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.4);
    --radius: 20px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-color);
    background-image:
        radial-gradient(circle at 10% 18%, rgba(0, 229, 255, 0.11) 0%, transparent 34%),
        radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.12) 0%, transparent 35%),
        linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: auto, auto, 56px 56px, 56px 56px;
    background-attachment: fixed;
    display: grid;
    place-items: center;
    padding: 20px 14px;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 6% 12% auto auto;
    width: min(420px, 62vw);
    aspect-ratio: 1;
    border-radius: 36px;
    background:
        linear-gradient(135deg, rgba(0, 229, 255, 0.16), rgba(59, 130, 246, 0.03)),
        radial-gradient(circle at 35% 28%, rgba(255, 255, 255, 0.28), transparent 2px),
        radial-gradient(circle at 70% 72%, rgba(0, 229, 255, 0.22), transparent 2px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    filter: blur(0.1px);
    opacity: 0.5;
    transform: rotateX(58deg) rotateZ(-22deg);
    transform-origin: center;
    pointer-events: none;
    box-shadow: 0 40px 90px rgba(0, 0, 0, 0.35), 0 0 90px rgba(0, 229, 255, 0.12);
}

.shell {
    width: min(480px, 100%);
    display: grid;
    gap: 20px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.brand-lockup {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    text-decoration: none;
    margin-right: auto;
}

.brand-lockup-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 1px solid rgba(0, 229, 255, 0.28);
    background: rgba(0, 229, 255, 0.08);
    box-shadow: 0 0 28px rgba(0, 229, 255, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.brand-lockup-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.brand-lockup-copy {
    display: grid;
    gap: 2px;
}

.brand-lockup-copy strong {
    font-size: 0.95rem;
    font-weight: 800;
}

.brand-lockup-copy span {
    color: var(--text-muted);
    font-size: 0.74rem;
    font-weight: 700;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    opacity: 0.6;
}

.utility-bar {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.utility-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.utility-link:hover {
    border-color: rgba(59, 130, 246, 0.4);
    background: rgba(59, 130, 246, 0.08);
    transform: translateY(-1px);
}

.lang-link {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.lang-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.lang-link.active {
    color: var(--accent-info);
    border-color: rgba(59, 130, 246, 0.3);
    background: rgba(59, 130, 246, 0.1);
}

.hero {
    padding: 24px 24px 20px;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.14), rgba(59, 130, 246, 0.14));
    color: #7DF7FF;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 229, 255, 0.28);
}

h1 {
    margin: 0;
    font-size: clamp(28px, 6vw, 36px);
    letter-spacing: -0.03em;
    font-weight: 800;
}

.sub {
    color: var(--text-muted);
    margin-top: 12px;
    margin-bottom: 0;
    line-height: 1.6;
    font-size: 0.95rem;
}

.form-card {
    padding: 24px;
}

.label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 10px;
    display: block;
}

.input {
    width: 100%;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 0.95rem;
    outline: none;
    font-family: inherit;
    transition: all 0.2s ease;
}

.input:focus {
    border-color: var(--accent-info);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background: rgba(0, 0, 0, 0.3);
}

.grid {
    display: grid;
    gap: 20px;
}

.btn {
    width: 100%;
    border: 0;
    border-radius: 12px;
    padding: 16px;
    font-size: 1rem;
    font-weight: 700;
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--accent-brand), var(--accent-info));
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 14px 34px rgba(0, 145, 255, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.28);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn:hover {
    background: linear-gradient(135deg, #62F7FF, #3B82F6);
    box-shadow: 0 18px 42px rgba(0, 145, 255, 0.34);
    transform: translateY(-1px);
}

.divider {
    margin: 24px 0;
    display: flex;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    gap: 16px;
}

.divider::before,
.divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.oauth-grid {
    display: grid;
    gap: 12px;
}

.oauth-btn {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.oauth-btn:hover {
    border-color: var(--border-highlight);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-1px);
}

.oauth-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.help-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: rgba(16, 23, 35, 0.4);
    box-shadow: var(--shadow-md);
}

.help-card summary {
    padding: 18px;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    font-size: 0.95rem;
}

.help-content {
    padding: 0 18px 18px;
    border-top: 1px solid var(--border-color);
    margin-top: 10px;
    display: grid;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.cmd {
    margin-top: 8px;
    background: rgba(0, 0, 0, 0.4);
    padding: 10px 14px;
    border-radius: 8px;
    font-family: monospace;
    color: var(--accent-brand);
    border: 1px solid rgba(0, 229, 255, 0.2);
    letter-spacing: 0.05em;
}

.language-switch {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 42px;
    padding: 4px;
    border-radius: 13px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
}

.language-switch-icon {
    width: 28px;
    display: inline-grid;
    place-items: center;
    color: var(--accent-brand);
}

.language-switch-option {
    border: 0;
    border-radius: 9px;
    background: transparent;
    color: var(--text-muted);
    min-height: 32px;
    padding: 0 10px;
    font: inherit;
    font-size: 0.78rem;
    font-weight: 800;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.language-switch-option.is-active {
    color: var(--text-primary);
    background: rgba(59, 130, 246, 0.22);
    box-shadow: inset 0 0 0 1px rgba(96, 165, 250, 0.28);
}

.language-switch-code {
    letter-spacing: 0;
}

.language-switch-label {
    font-weight: 700;
}

.language-toast {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 80;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    min-height: 42px;
    padding: 10px 14px;
    border: 1px solid rgba(32, 211, 155, 0.36);
    border-radius: 12px;
    color: #eafff6;
    background: rgba(11, 22, 34, 0.9);
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.32);
    backdrop-filter: blur(18px);
    font-size: 0.86rem;
    font-weight: 700;
}

.language-toast i {
    color: #20d39b;
}

.result {
    display: none;
    gap: 14px;
    margin-top: 18px;
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(0, 229, 255, 0.16);
    background: rgba(0, 0, 0, 0.18);
}

.row,
.kv {
    display: grid;
    gap: 6px;
}

.k,
.kv .k {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.v,
.kv .v {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 800;
}

.links {
    display: grid;
    gap: 10px;
    margin-top: 10px;
}

.status,
.alert,
.muted {
    color: var(--text-muted);
    line-height: 1.6;
}

.status,
.alert {
    margin-top: 14px;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    font-size: 0.9rem;
    font-weight: 600;
}

.status.success,
.alert.success {
    color: #6EE7B7;
    border-color: rgba(16, 185, 129, 0.32);
    background: rgba(16, 185, 129, 0.12);
}

.status.error,
.alert.error {
    color: #FCA5A5;
    border-color: rgba(239, 68, 68, 0.32);
    background: rgba(239, 68, 68, 0.12);
}

.remember-row,
.switch-auth {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.remember-row {
    display: flex;
    align-items: center;
    gap: 9px;
    cursor: pointer;
}

.switch-auth a,
.muted a {
    color: #93C5FD;
    font-weight: 800;
}

.callback-actions {
    display: grid;
    gap: 10px;
}

.auth-visual {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    perspective: 900px;
}

.auth-command-panel {
    margin-top: 18px;
    display: grid;
    gap: 10px;
    padding: 16px;
    border-radius: 16px;
    border: 1px solid rgba(0, 229, 255, 0.18);
    background: rgba(0, 0, 0, 0.18);
}

.auth-visual span {
    min-height: 54px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.18), rgba(255, 255, 255, 0.03));
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.24);
    transform: rotateX(18deg) rotateY(-12deg);
}

.auth-visual span:nth-child(2) {
    transform: translateY(-8px) rotateX(18deg);
    background: linear-gradient(145deg, rgba(0, 229, 255, 0.2), rgba(255, 255, 255, 0.04));
}

@media (max-width: 520px) {
    .language-switch-label {
        display: none;
    }

    .utility-link {
        padding: 10px 12px;
    }
}

/* Auth callback specific */
.container {
    width: min(600px, 100%);
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header-logo {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    margin: 0 auto 16px;
    display: block;
    border: 1px solid var(--border-color);
}

.success-msg {
    color: #10B981;
    font-weight: 600;
}

.links a {
    display: block;
    padding: 12px;
    border: var(--border-color);
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.links a:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Message / Alerts */
.msg {
    margin-top: 16px;
    padding: 14px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
}

.msg.error {
    background: rgba(239, 68, 68, 0.15);
    color: #FCA5A5;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.msg.success {
    background: rgba(16, 185, 129, 0.15);
    color: #6EE7B7;
    border: 1px solid rgba(16, 185, 129, 0.3);
}