/* ============================================
   Auth Pages (Login / Register)
   ============================================ */

:root {
    --green: #00D084;
    --green-dark: #00A86B;
    --green-light: #E6FAF0;
    --navy: #1A2B4A;
    --bg: #FFFFFF;
    --card-bg: #F5F7FA;
    --text-sub: #6B7280;
    --border: #E5E7EB;
    --shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    --radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --danger: #EF4444;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--navy);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }

/* --- Layout: Split Screen --- */
.auth-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Left panel - branding */
.auth-brand {
    flex: 1;
    background: linear-gradient(135deg, var(--navy) 0%, #243B63 50%, #1A2B4A 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 60px;
    position: relative;
    overflow: hidden;
}

.auth-brand::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 208, 132, 0.12) 0%, transparent 70%);
    border-radius: 50%;
}

.auth-brand::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(0, 208, 132, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.auth-brand-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 400px;
}

.auth-brand .logo {
    height: 56px;
    margin: 0 auto 40px;
}

.auth-brand h1 {
    font-size: 2rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
}

.auth-brand h1 .highlight {
    color: var(--green);
}

.auth-brand p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    margin-bottom: 48px;
}

.auth-stats {
    display: flex;
    gap: 32px;
    justify-content: center;
}

.auth-stat {
    text-align: center;
}

.auth-stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--green);
}

.auth-stat-label {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 4px;
}

/* Right panel - form */
.auth-form-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 60px 40px;
    background: var(--bg);
    position: relative;
}

.auth-form-wrapper {
    width: 100%;
    max-width: 420px;
}

/* Mobile logo (hidden on desktop) */
.auth-mobile-logo {
    display: none;
    margin: 0 auto 32px;
    height: 44px;
}

.auth-form-header {
    margin-bottom: 36px;
}

.auth-form-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.auth-form-header p {
    font-size: 0.9375rem;
    color: var(--text-sub);
}

.auth-form-header p a {
    color: var(--green);
    font-weight: 600;
    transition: color var(--transition);
}

.auth-form-header p a:hover {
    color: var(--green-dark);
}

/* --- Social Login --- */
.social-login {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 28px;
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 13px 20px;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    border: 1.5px solid var(--border);
    background: #fff;
    color: var(--navy);
}

.btn-social:hover {
    border-color: #ccc;
    box-shadow: var(--shadow);
}

.btn-social svg {
    flex-shrink: 0;
}

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}

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

.auth-divider span {
    font-size: 0.8125rem;
    color: var(--text-sub);
    white-space: nowrap;
}

/* --- Form Fields --- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 13px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--navy);
    background: var(--card-bg);
    transition: all var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--green);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0, 208, 132, 0.1);
}

.form-input::placeholder {
    color: #B0B7C3;
}

.form-input.error {
    border-color: var(--danger);
}

.form-error {
    font-size: 0.8125rem;
    color: var(--danger);
    margin-top: 6px;
}

/* Password wrapper */
.password-wrapper {
    position: relative;
}

.password-wrapper .form-input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-sub);
    padding: 4px;
    display: flex;
    align-items: center;
    transition: color var(--transition);
}

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

/* Form row (inline fields) */
.form-row {
    display: flex;
    gap: 12px;
}

.form-row .form-group {
    flex: 1;
}

/* Checkbox */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 20px;
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--green);
    cursor: pointer;
    flex-shrink: 0;
}

.form-check label {
    font-size: 0.875rem;
    color: var(--text-sub);
    cursor: pointer;
    line-height: 1.5;
}

.form-check label a {
    color: var(--green);
    font-weight: 500;
}

/* Form extras (remember me, forgot) */
.form-extras {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.form-extras .form-check {
    margin-bottom: 0;
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--green);
    font-weight: 500;
    transition: color var(--transition);
}

.forgot-link:hover {
    color: var(--green-dark);
}

/* Submit button */
.btn-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 15px 24px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    color: #fff;
    background: var(--green);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 4px 16px rgba(0, 208, 132, 0.3);
}

.btn-submit:hover {
    background: var(--green-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(0, 208, 132, 0.4);
}

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

/* Flash messages */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-danger {
    background: #FEF2F2;
    color: #B91C1C;
    border: 1px solid #FECACA;
}

.alert-success {
    background: var(--green-light);
    color: var(--green-dark);
    border: 1px solid #A7F3D0;
}

/* Footer link */
.auth-footer {
    text-align: center;
    margin-top: 32px;
    font-size: 0.8125rem;
    color: var(--text-sub);
}

.auth-footer a {
    color: var(--text-sub);
    transition: color var(--transition);
}

.auth-footer a:hover {
    color: var(--green);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .auth-brand {
        padding: 40px;
    }
    .auth-brand h1 {
        font-size: 1.625rem;
    }
}

@media (max-width: 768px) {
    .auth-wrapper {
        flex-direction: column;
    }

    .auth-brand {
        display: none;
    }

    .auth-mobile-logo {
        display: block;
    }

    .auth-form-panel {
        padding: 40px 24px;
        min-height: 100vh;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }
}