/* ============================================
   AUTH.CSS - Authentication Pages Styles
   Enhanced Design System v2.0
   ============================================ */

/* ============================================
   AUTH LAYOUT
   ============================================ */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    position: relative;
    overflow: hidden;

    /* Subtle gradient background */
    background: linear-gradient(
        135deg,
        var(--slate-50) 0%,
        var(--white) 50%,
        rgba(219, 234, 254, 0.3) 100%
    );
}

/* Background decorative elements */
.auth-wrapper::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(
        ellipse at center,
        rgba(37, 99, 235, 0.04) 0%,
        transparent 70%
    );
    pointer-events: none;
}

.auth-wrapper::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 60%;
    height: 100%;
    background: radial-gradient(
        ellipse at center,
        rgba(14, 165, 233, 0.03) 0%,
        transparent 70%
    );
    pointer-events: none;
}

/* ============================================
   AUTH CARD
   ============================================ */
.auth-card {
    position: relative;
    z-index: 1;
    background-color: var(--white);
    border: 1px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    box-shadow:
        0 4px 6px -1px rgba(0, 0, 0, 0.05),
        0 10px 15px -3px rgba(0, 0, 0, 0.08),
        0 0 0 1px rgba(255, 255, 255, 0.5) inset;
    width: 100%;
    max-width: 600px;
    animation: fadeInUp 0.5s ease-out;
}

/* Card gradient border effect */
.auth-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(
        135deg,
        rgba(37, 99, 235, 0.15),
        rgba(14, 165, 233, 0.1),
        transparent 50%
    );
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

.auth-card-compact {
    max-width: 420px;
    padding: var(--space-8);
}

/* Back to Home Link */
.auth-back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    color: var(--slate-500);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    margin-bottom: var(--space-6);
    transition: color var(--transition-fast);
}

.auth-back-link:hover {
    color: var(--primary);
}

.auth-card h1 {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--slate-900);
    margin-bottom: var(--space-2);
    letter-spacing: -0.02em;
}

.auth-subtitle {
    color: var(--slate-500);
    font-size: var(--text-base);
    margin-bottom: var(--space-8);
    line-height: var(--leading-relaxed);
}

/* ============================================
   FORM SECTIONS (Registration)
   ============================================ */
.form-section {
    margin-bottom: var(--space-8);
}

.form-section h3 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-5);
    color: var(--slate-800);
    padding-bottom: var(--space-3);
    position: relative;
}

/* Gradient underline for section headers */
.form-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 3rem;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
}

/* ============================================
   PASSWORD REQUIREMENTS BOX
   ============================================ */
.password-requirements {
    margin: var(--space-4) 0 var(--space-6);
    background: linear-gradient(
        135deg,
        rgba(241, 245, 249, 0.8) 0%,
        rgba(248, 250, 252, 0.5) 100%
    );
    padding: var(--space-4) var(--space-5);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
}

.password-requirements p {
    margin-bottom: var(--space-2);
    color: var(--slate-600);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.password-requirements ul {
    margin-left: var(--space-5);
    color: var(--slate-600);
    font-size: var(--text-sm);
}

.password-requirements li {
    list-style: disc;
    margin-bottom: var(--space-1);
    transition: color var(--transition-fast);
}

.password-requirements li.valid {
    color: var(--success);
}

.password-requirements li.invalid {
    color: var(--danger);
}

/* ============================================
   CHECKBOX SPACING (Login form)
   ============================================ */
.auth-card .checkbox-group {
    margin-bottom: var(--space-6);
}

/* ============================================
   AUTH FOOTER (Links)
   ============================================ */
.auth-footer {
    margin-top: var(--space-8);
    padding-top: var(--space-6);
    border-top: 1px solid var(--slate-100);
    text-align: center;
}

.auth-footer p {
    color: var(--slate-500);
    margin: var(--space-2) 0;
    font-size: var(--text-sm);
}

.auth-footer a {
    color: var(--primary);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}

.auth-footer a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ============================================
   ANIMATIONS
   Note: @keyframes fadeInUp is defined in base.css
   ============================================ */

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
    .auth-wrapper {
        padding: var(--space-4);
    }

    .auth-card {
        padding: var(--space-6);
        border-radius: var(--radius-xl);
    }

    .auth-card h1 {
        font-size: var(--text-2xl);
    }

    .auth-card-compact {
        padding: var(--space-5);
    }

    .lang-switcher {
        top: var(--space-3);
        right: var(--space-3);
    }
}

/* ============================================
   LANGUAGE SWITCHER
   ============================================ */
.lang-switcher {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    display: flex;
    gap: var(--space-2);
    z-index: 10;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--white);
    border: 1px solid var(--slate-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--slate-600);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.lang-btn:hover {
    background: var(--slate-50);
    border-color: var(--slate-300);
    color: var(--slate-700);
}

.lang-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
}

.lang-btn.active .lang-code {
    color: var(--white);
}

.lang-flag {
    font-size: 1.1em;
    line-height: 1;
}

.lang-code {
    font-family: var(--font-sans);
    font-weight: var(--font-semibold);
    letter-spacing: 0.02em;
}