/**
 * BuzzersFit Login Page 2025
 *
 * Standalone platform login — split layout with photo panel
 * Requires: design-system.css, components.css
 */

/* ============================================
   LAYOUT
   ============================================ */

.login-page {
    min-height: 100vh;
    display: flex;
}

/* ============================================
   SIDE PANEL (photo + branding)
   ============================================ */

.login-side {
    flex: 1;
    display: none;
    position: relative;
    overflow: hidden;
    background: url('../../i/photos/outdoor-buzzer.webp') center/cover no-repeat;
}

.login-side::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.75) 0%,
        rgba(0, 0, 0, 0.5) 50%,
        rgba(0, 0, 0, 0.65) 100%
    );
}

.login-side-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    padding: var(--space-12);
    color: var(--color-text-inverse);
    text-align: center;
}

.login-side-logo {
    max-width: 320px;
    margin-bottom: var(--space-8);
}

.login-side-tagline {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
    opacity: 0.85;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
}

.login-side-separator {
    width: 3rem;
    height: 2px;
    background: rgba(255, 255, 255, 0.4);
    margin: var(--space-6) auto;
    border: none;
}

.login-side-description {
    font-size: var(--text-sm);
    opacity: 0.7;
    max-width: 340px;
    line-height: var(--leading-relaxed);
}

/* ============================================
   MAIN PANEL (login form)
   ============================================ */

.login-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--space-8);
    background: var(--color-background);
    position: relative;
}

.login-card {
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-logo {
    height: 3rem;
    margin-bottom: var(--space-6);
}

.login-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-2);
}

.login-subtitle {
    color: var(--color-text-secondary);
}

/* ============================================
   FORM
   ============================================ */

.login-form {
    background: var(--surface-base);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-lg);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.login-footer a {
    color: var(--color-primary);
    font-weight: var(--font-medium);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.input-wrapper {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-1);
}

.password-toggle:hover {
    color: var(--color-text);
}

.form-error-message {
    display: none;
    padding: var(--space-3) var(--space-4);
    margin-bottom: var(--space-4);
    background: var(--color-danger-bg);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-lg);
    color: var(--color-danger);
    font-size: var(--text-sm);
}

.form-error-message.show {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ============================================
   TOP BAR (nav links + theme toggle)
   ============================================ */

.login-topbar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
}

.login-topbar-links {
    display: flex;
    gap: var(--space-1);
}

/* ============================================
   LOADING STATE
   ============================================ */

.btn-loading {
    position: relative;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    width: 1.25rem;
    height: 1.25rem;
    top: 50%;
    left: 50%;
    margin-left: -0.625rem;
    margin-top: -0.625rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-text-inverse);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   SHAKE ANIMATION
   ============================================ */

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (min-width: 1024px) {
    .login-side {
        display: block;
    }
}

@media (max-width: 480px) {
    .login-main {
        padding: var(--space-4);
    }

    .login-form {
        padding: var(--space-6);
    }

    .login-logo {
        height: 2.5rem;
    }
}