:root {
    --color-accent:          #6366f1;
    --color-accent-hover:    #818cf8;
    --color-accent-muted:    rgba(99, 102, 241, 0.15);
    --color-accent-glow:     rgba(99, 102, 241, 0.35);
    --color-accent-alt:      #8b5cf6;

    --color-bg:              #09090f;
    --color-surface:         rgba(255, 255, 255, 0.03);
    --color-surface-hover:   rgba(255, 255, 255, 0.05);
    --color-border:          rgba(255, 255, 255, 0.08);
    --color-border-accent:   rgba(99, 102, 241, 0.08);

    --color-text-primary:    #ffffff;
    --color-text-secondary:  rgba(255, 255, 255, 0.6);
    --color-text-muted:      rgba(255, 255, 255, 0.4);
    --color-text-placeholder:rgba(255, 255, 255, 0.2);

    --color-danger:          rgba(239, 68, 68, 0.1);
    --color-danger-border:   rgba(239, 68, 68, 0.3);
    --color-danger-text:     #fca5a5;

    --shadow-card:
        0 0 0 1px var(--color-border-accent),
        0 24px 64px rgba(0, 0, 0, 0.6),
        0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-btn:            0 4px 16px var(--color-accent-glow);
    --shadow-btn-hover:      0 6px 20px rgba(99, 102, 241, 0.5);
    --shadow-btn-active:     0 2px 8px rgba(99, 102, 241, 0.3);
    --shadow-input-focus:    0 0 0 3px var(--color-accent-muted);

    --radius-card:           16px;
    --radius-input:          8px;
    --radius-btn:            8px;
    --radius-alert:          8px;

    --card-max-width:        400px;
    --card-padding:          2.5rem 2rem;
}

.login-bg {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg);
    background-image:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(99, 102, 241, 0.18) 0%, transparent 70%),
        radial-gradient(ellipse 40% 30% at 80% 90%, rgba(139, 92, 246, 0.10) 0%, transparent 60%);
}

.login-center {
    width: 100%;
    max-width: var(--card-max-width);
}

.login-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    padding: var(--card-padding);
    box-shadow: var(--shadow-card);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    display: block;
    filter: drop-shadow(0 0 12px var(--color-accent-glow));
}

.login-title {
    color: var(--color-text-primary);
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 0.25rem;
}

.login-subtitle {
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.login-error {
    background: var(--color-danger);
    border: 1px solid var(--color-danger-border);
    color: var(--color-danger-text);
    border-radius: var(--radius-alert);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.field-group {
    margin-bottom: 1.25rem;
}

.field-label {
    display: block;
    color: var(--color-text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
    letter-spacing: 0.02em;
}

.field-input {
    width: 100%;
    background: var(--color-surface-hover) !important;
    border: 1px solid var(--color-border) !important;
    border-radius: var(--radius-input) !important;
    color: var(--color-text-primary) !important;
    padding: 0.65rem 0.875rem;
    box-sizing: border-box;
    outline: none;
}

.field-input::placeholder {
    color: var(--color-text-placeholder) !important;
}

.field-input:focus {
    border-color: var(--color-accent) !important;
    background: var(--color-accent-muted) !important;
    box-shadow: var(--shadow-input-focus) !important;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.remember-checkbox {
    width: 15px;
    height: 15px;
    accent-color: var(--color-accent);
    cursor: pointer;
}

.remember-label {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    cursor: pointer;
    user-select: none;
}

.login-btn {
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-alt) 100%);
    border: none;
    border-radius: var(--radius-btn);
    color: var(--color-text-primary);
    font-weight: 600;
    box-shadow: var(--shadow-btn);
}

.login-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
}

.login-btn:active {
    opacity: 1;
    transform: translateY(0);
    box-shadow: var(--shadow-btn-active);
}