/* ==========================================================================
 * DSTAIR — Login Page
 * Scale-in animation, floating particles, form glow effects.
 * ========================================================================== */


/* --------------------------------------------------------------------------
 * § 1. BACKGROUND
 * -------------------------------------------------------------------------- */
.login-background {
    position: fixed;
    inset: 0;
    z-index: var(--z-background);
    background:
        radial-gradient(ellipse at 30% 20%, rgba(var(--color-primary-rgb), 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 80%, rgba(var(--color-accent-rgb), 0.08) 0%, transparent 50%),
        var(--color-dark);
}


/* --------------------------------------------------------------------------
 * § 2. FORM CARD
 * -------------------------------------------------------------------------- */
.login-card {
    animation: scale-in 0.6s var(--ease-out) forwards;
    position: relative;
    overflow: hidden;
}

/* Subtle top-edge glow */
.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg,
            transparent,
            rgba(var(--color-highlight-rgb), 0.5),
            transparent);
}


/* --------------------------------------------------------------------------
 * § 3. INPUT FIELDS
 * -------------------------------------------------------------------------- */
.login-input {
    background: rgba(var(--color-dark-rgb), 0.6);
    border: 1px solid var(--white-10);
    color: var(--white);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    transition: all var(--transition-base);
    width: 100%;
}

.login-input::placeholder {
    color: var(--white-40);
}

.login-input:focus {
    outline: none;
    border-color: rgba(var(--color-highlight-rgb), 0.4);
    box-shadow: 0 0 0 3px rgba(var(--color-highlight-rgb), 0.08);
    background: rgba(var(--color-dark-rgb), 0.8);
}


/* --------------------------------------------------------------------------
 * § 4. SUBMIT BUTTON
 * -------------------------------------------------------------------------- */
.login-btn {
    background: linear-gradient(135deg, var(--color-highlight) 0%, #a8d904 100%);
    color: var(--color-dark);
    font-weight: 700;
    border: none;
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    width: 100%;
    position: relative;
    overflow: hidden;
}

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

.login-btn:active {
    transform: translateY(0);
}

/* Shine sweep */
.login-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -100%;
    width: 50%;
    height: 200%;
    background: linear-gradient(90deg,
            transparent,
            rgba(255, 255, 255, 0.15),
            transparent);
    transition: left 0.5s var(--ease-out);
}

.login-btn:hover::after {
    left: 150%;
}


/* --------------------------------------------------------------------------
 * § 5. UTILITIES
 * -------------------------------------------------------------------------- */
.login-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--white-40);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--white-10);
}