/**
 * Login Page Styles
 * Apple HIG стили для страницы входа
 */

/* ===== LAYOUT ===== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #060b18 0%, #0a1628 25%, #0d2240 50%, #0a1628 75%, #060b18 100%);
    background-size: 400% 400%;
    animation: loginGradient 20s ease infinite;
    padding: var(--space-base);
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(10, 132, 255, 0.12) 0%, transparent 70%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(10, 80, 180, 0.10) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.login-card {
    position: relative;
    z-index: 1;
}

@keyframes loginGradient {
    0% { background-position: 0% 50%; }
    25% { background-position: 50% 100%; }
    50% { background-position: 100% 50%; }
    75% { background-position: 50% 0%; }
    100% { background-position: 0% 50%; }
}

.login-card {
    background: var(--bg-secondary);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow), 0 0 0 0.5px var(--separator), 0 8px 32px rgba(0, 0, 0, 0.08);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 400px;
    border: 0.5px solid var(--separator);
}

/* ===== HEADER & LOGO ===== */
.login-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.login-logo {
    max-width: 120px;
    width: 100%;
    height: auto;
    object-fit: contain;
    margin: 0 auto;
    display: block;
    transition: all var(--duration-normal) var(--ease-default);
}

/* Инверсия цвета для светлой темы */
@media (prefers-color-scheme: light) {
    .login-logo {
        filter: invert(1) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
    }
}

html.theme-light .login-logo {
    filter: invert(1) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.1));
}

/* Для темной темы - без инверсии */
@media (prefers-color-scheme: dark) {
    .login-logo {
        filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
    }
}

html.theme-dark .login-logo,
[data-theme="dark"] .login-logo {
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}

.login-header .subtitle {
    color: var(--text-secondary);
    font-size: 15px;
    margin: 0;
}

/* ===== FORM ===== */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.form-group label {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
}

.form-group input {
    padding: var(--space-md) var(--space-base);
    border: none;
    border-radius: 10px;
    font-size: 15px;
    background: var(--input-bg);
    color: var(--text-primary);
    transition: all var(--duration-fast) var(--ease-default);
    min-height: 2.75rem;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.3);
}

.form-group input.error {
    background: rgba(255, 59, 48, 0.12);
    color: var(--system-red);
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.3);
}

.form-group input.error:focus {
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.4);
}

.form-group.error label {
    color: var(--system-red);
}

/* ===== BUTTON ===== */
.login-button {
    background: var(--system-blue);
    color: var(--text-on-accent);
    border: none;
    padding: 0.625rem var(--space-xl);
    border-radius: 10px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-default);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    min-height: 2.5rem;
    box-shadow: var(--card-shadow);
}

.login-button:hover {
    background: color-mix(in srgb, var(--system-blue) 92%, white);
    box-shadow: var(--card-shadow-hover);
}

.login-button:active {
    background: color-mix(in srgb, var(--system-blue) 88%, black);
    box-shadow: var(--card-shadow);
}

.login-button:focus-visible {
    outline: 2px solid var(--system-blue);
    outline-offset: 2px;
}

.login-button:disabled {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: not-allowed;
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--space-base);
    border-radius: var(--card-radius);
    margin-bottom: var(--space-base);
    font-size: 15px;
}

.alert-error {
    background: rgba(255, 59, 48, 0.12);
    color: var(--system-red);
    border: 2px solid var(--system-red);
    box-shadow: 0 2px 8px rgba(186, 26, 26, 0.2);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-weight: 500;
}

.alert-error .material-symbols-outlined {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-success {
    background: rgba(52, 199, 89, 0.12);
    color: var(--system-green);
    border: 0.5px solid var(--system-green);
}

.alert-info {
    background: rgba(0, 122, 255, 0.12);
    color: var(--system-blue);
    border: 0.5px solid var(--system-blue);
}

/* ===== DEFAULT CREDENTIALS ===== */
.default-credentials {
    margin-top: var(--space-xl);
    padding: var(--space-base);
    background: rgba(255, 149, 0, 0.12);
    color: var(--system-orange);
    border-radius: var(--card-radius);
    border: 0.5px solid var(--system-orange);
}

.default-credentials h3 {
    margin: 0 0 var(--space-sm) 0;
    font-size: 17px;
}

.default-credentials p {
    margin: var(--space-xs) 0;
    font-size: 14px;
}

.credentials-code {
    background: rgba(0, 0, 0, 0.1);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 6px;
    font-family: monospace;
    font-size: 14px;
}

/* ===== LOGIN LINKS ===== */
.login-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    font-size: 13px;
}

.login-links a {
    color: var(--system-blue);
    text-decoration: none;
}

.login-links a:hover {
    text-decoration: underline;
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== LIGHT MODE ===== */
[data-theme="light"] .login-container,
html.theme-light .login-container {
    background: linear-gradient(135deg, #e8eaf6 0%, #c5cae9 25%, #dce3f0 50%, #c5cae9 75%, #e8eaf6 100%);
    background-size: 400% 400%;
}

[data-theme="light"] .login-container::before,
html.theme-light .login-container::before {
    background:
        radial-gradient(ellipse 80% 50% at 20% 40%, rgba(10, 132, 255, 0.08) 0%, transparent 70%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(10, 80, 180, 0.06) 0%, transparent 70%);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
    .login-card {
        padding: var(--space-xl);
        margin: var(--space-base);
    }

    .login-logo {
        max-width: 140px;
    }
}