:root {
    --bg-start: #040217;
    --bg-end: #1e0b4d;
    --card-bg: #111a3c;
    --card-border: rgba(255, 255, 255, 0.12);
    --input-bg: rgba(255, 255, 255, 0.08);
    --input-border: rgba(255, 255, 255, 0.2);
    --text-primary: #f7f8ff;
    --text-muted: rgba(247, 248, 255, 0.75);
    --accent: #4bf3ff;
    --accent-strong: #2ac9ff;
    --error-bg: rgba(255, 107, 136, 0.2);
    --error-text: #ff6b88;
    --info-bg: rgba(75, 243, 255, 0.12);
    --info-text: #72f9ff;
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text-primary);
    background: radial-gradient(circle at top, var(--bg-end), var(--bg-start));
}

.login-gradient {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    background: radial-gradient(circle at 20% 20%, rgba(76, 0, 255, 0.35), transparent 60%),
                radial-gradient(circle at 80% 0%, rgba(0, 212, 255, 0.25), transparent 55%),
                radial-gradient(circle at 50% 80%, rgba(0, 15, 124, 0.45), transparent 65%),
                linear-gradient(135deg, var(--bg-start), #050b22);
}

.login-card {
    width: min(440px, 100%);
    background: var(--card-bg);
    border-radius: 24px;
    padding: 40px 36px;
    border: 1px solid var(--card-border);
    box-shadow: 0 25px 80px rgba(6, 9, 39, 0.55);
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.logo-mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: linear-gradient(145deg, #5a40ff, #7a66ff);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.brand h1 {
    margin: 0;
    font-size: 1.5rem;
}

.brand p {
    margin: 4px 0 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.field-label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 4px;
}

.label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.field-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.input-wrapper {
    width: 100%;
}

.input-wrapper input {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid transparent;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border 0.2s ease, background 0.2s ease;
}

.input-wrapper input::placeholder {
    color: rgba(247, 248, 255, 0.5);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.12);
}

.primary-btn {
    margin-top: 12px;
    padding: 15px;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--accent-strong), var(--accent));
    color: #050b22;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 25px rgba(74, 240, 255, 0.25);
}

.alert {
    border-radius: 14px;
    padding: 12px 14px;
    font-size: 0.9rem;
}

.alert-error {
    background: var(--error-bg);
    color: var(--error-text);
}

.alert-info {
    background: var(--info-bg);
    color: var(--info-text);
}

.footer-text {
    text-align: center;
    margin-top: 28px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

@media (max-width: 480px) {
    .login-card {
        padding: 24px 20px;
    }

    .brand {
        flex-direction: column;
        align-items: flex-start;
    }
}