/**
 * auth.css - 인증 관련 페이지 전용 스타일
 * login.html, ip_access_denied.html 등에서 사용
 *
 * 이 파일은 HANQ 디자인 시스템 컴포넌트를 활용하며,
 * 인증 페이지에 특화된 스타일만 정의합니다.
 *
 * 컴포넌트 의존성:
 * - css/core/tokens.css
 * - css/components/cards.css
 * - css/components/buttons.css
 * - css/components/forms.css
 * - css/components/alerts.css
 * - css/components/loading.css
 */

/* ========================================
   Base Reset & Typography (auth-specific)
   ======================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.auth-page {
    font-family: var(--hq-font-family, 'Pretendard Variable', 'Pretendard', 'Noto Sans KR', -apple-system, sans-serif);
    background: var(--hq-color-background, linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%));
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--hq-space-8, 1.5rem);
    line-height: 1.6;
    letter-spacing: -0.01em;
    word-break: keep-all;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   Auth Container & Card
   ======================================== */
.auth-container {
    width: 100%;
    max-width: 440px;
}

.auth-card {
    background: var(--hq-color-surface, #fff);
    border-radius: var(--hq-radius-2xl, 20px);
    box-shadow: var(--hq-shadow-md, 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 10px 20px -5px rgba(0, 0, 0, 0.1));
    padding: var(--hq-space-10, 2.5rem) var(--hq-space-9, 2rem);
    animation: hq-fadeInUp 0.5s ease-out;
}

/* ========================================
   Auth Header & Logo
   ======================================== */
.auth-header {
    text-align: center;
    margin-bottom: var(--hq-space-9, 2rem);
}

.logo-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--hq-space-7, 1.25rem);
    position: relative;
}

.logo-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--hq-slate-100, #f1f5f9) 0%, var(--hq-slate-200, #e2e8f0) 100%);
    border-radius: 50%;
    animation: hq-pulse 2.5s ease-in-out infinite;
}

.logo-ring {
    position: absolute;
    inset: -6px;
    border: 2px solid rgba(30, 41, 59, 0.08);
    border-radius: 50%;
}

.logo-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-img {
    width: 48px;
    height: 48px;
    border-radius: var(--hq-radius-md, 10px);
    object-fit: cover;
}

.auth-title {
    font-size: var(--hq-font-size-2xl, 1.375rem);
    font-weight: 700;
    color: var(--hq-color-text-primary, #0f172a);
    margin-bottom: var(--hq-space-1, 0.25rem);
    letter-spacing: -0.01em;
}

.auth-subtitle {
    font-size: var(--hq-font-size-md, 0.875rem);
    color: var(--hq-color-text-secondary, #64748b);
}

/* ========================================
   Auth Divider
   ======================================== */
.auth-divider {
    height: 1px;
    background: var(--hq-gradient-divider, linear-gradient(to right, transparent, #e2e8f0, transparent));
    margin: var(--hq-space-8, 1.5rem) 0;
}

/* ========================================
   Form Elements (Auth-specific overrides)
   ======================================== */
.form-group {
    margin-bottom: var(--hq-space-6, 1.125rem);
}

.form-label {
    display: block;
    font-size: var(--hq-font-size-base, 0.8125rem);
    font-weight: 500;
    color: var(--hq-color-text-primary, #475569);
    margin-bottom: var(--hq-space-2, 0.375rem);
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: var(--hq-space-5, 0.875rem);
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--hq-color-text-muted, #94a3b8);
    pointer-events: none;
    transition: color var(--hq-transition-fast, 0.15s);
}

.form-input {
    width: 100%;
    padding: var(--hq-space-4, 0.6875rem) var(--hq-space-5, 0.875rem) var(--hq-space-4, 0.6875rem) calc(var(--hq-space-5, 0.875rem) + 18px + var(--hq-space-4, 0.625rem));
    border: 1px solid var(--hq-color-border, #e2e8f0);
    border-radius: var(--hq-radius-md, 10px);
    font-size: var(--hq-font-size-md, 0.875rem);
    font-family: inherit;
    color: var(--hq-color-text-primary, #0f172a);
    background: var(--hq-color-surface, #fff);
    transition: border-color var(--hq-transition-fast, 0.15s), box-shadow var(--hq-transition-fast, 0.15s);
}

.form-input:focus {
    outline: none;
    border-color: var(--hq-color-border-focus, #1e293b);
    box-shadow: var(--hq-shadow-focus, 0 0 0 3px rgba(30, 41, 59, 0.06));
}

.form-input:focus ~ .input-icon,
.input-wrapper:focus-within .input-icon {
    color: var(--hq-color-text-primary, #1e293b);
}

.form-input::placeholder {
    color: var(--hq-color-text-muted, #94a3b8);
}

/* Password Toggle */
.password-toggle {
    position: absolute;
    right: var(--hq-space-5, 0.75rem);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    padding: var(--hq-space-1, 0.25rem);
    cursor: pointer;
    color: var(--hq-color-text-muted, #94a3b8);
    transition: color var(--hq-transition-fast, 0.15s);
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    color: var(--hq-color-text-secondary, #64748b);
}

.password-toggle svg {
    width: 18px;
    height: 18px;
}

/* ========================================
   Buttons (Auth-specific)
   ======================================== */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--hq-space-3, 0.5rem);
    padding: var(--hq-space-5, 0.75rem) var(--hq-space-7, 1.25rem);
    border-radius: var(--hq-radius-md, 10px);
    font-size: var(--hq-font-size-md, 0.875rem);
    font-weight: 500;
    font-family: inherit;
    text-decoration: none;
    transition: all var(--hq-transition-fast, 0.15s) ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--hq-gradient-primary, linear-gradient(135deg, #1e293b 0%, #0f172a 100%));
    color: #fff;
    box-shadow: var(--hq-shadow-xs, 0 1px 3px rgba(0, 0, 0, 0.1));
}

.btn-primary:hover {
    background: var(--hq-gradient-primary-hover, linear-gradient(135deg, #334155 0%, #1e293b 100%));
    transform: translateY(-1px);
    box-shadow: var(--hq-shadow-sm, 0 4px 6px rgba(0, 0, 0, 0.1));
}

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

.btn-primary.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-icon {
    width: 16px;
    height: 16px;
}

.btn-spinner {
    display: none;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: hq-spin 0.6s linear infinite;
}

.btn-primary.loading .btn-spinner {
    display: block;
}

.btn-primary.loading .btn-text,
.btn-primary.loading .btn-icon {
    display: none;
}

/* ========================================
   Error Message
   ======================================== */
.error-box {
    background: var(--hq-color-error-bg, #fef2f2);
    border: 1px solid var(--hq-color-error-border, #fecaca);
    border-radius: var(--hq-radius-md, 10px);
    padding: var(--hq-space-5, 0.75rem) var(--hq-space-6, 1rem);
    margin-bottom: var(--hq-space-6, 1rem);
    display: flex;
    align-items: flex-start;
    gap: var(--hq-space-3, 0.5rem);
}

.error-icon {
    width: 18px;
    height: 18px;
    color: var(--hq-color-error-icon, #dc2626);
    flex-shrink: 0;
    margin-top: 1px;
}

.error-text {
    font-size: var(--hq-font-size-base, 0.8125rem);
    color: var(--hq-color-error-text, #b91c1c);
    line-height: 1.4;
}

/* ========================================
   Session Expired Alert
   ======================================== */
.session-expired-alert {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-left: 3px solid #dc2626;
    border-radius: 6px;
    padding: 0.875rem 1rem;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.session-expired-alert::before {
    content: "!";
    display: flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: #dc2626;
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.session-expired-alert span {
    font-size: 0.8125rem;
    color: #b91c1c;
    line-height: 1.5;
    font-weight: 500;
}

/* ========================================
   Notice Section (Security Info)
   ======================================== */
.notice-section {
    margin-top: var(--hq-space-7, 1.25rem);
}

.notice-title {
    font-size: var(--hq-font-size-sm, 0.75rem);
    font-weight: 600;
    color: var(--hq-color-text-secondary, #64748b);
    margin-bottom: var(--hq-space-4, 0.625rem);
    display: flex;
    align-items: center;
    gap: var(--hq-space-2, 0.375rem);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.notice-title svg {
    width: 14px;
    height: 14px;
}

.notice-list {
    list-style: none;
}

.notice-item {
    display: flex;
    align-items: flex-start;
    gap: var(--hq-space-3, 0.5rem);
    font-size: var(--hq-font-size-sm, 0.75rem);
    color: var(--hq-color-text-secondary, #64748b);
    line-height: 1.5;
}

.notice-item:not(:last-child) {
    margin-bottom: var(--hq-space-3, 0.5rem);
}

.notice-bullet {
    width: 4px;
    height: 4px;
    background: var(--hq-color-text-muted, #cbd5e1);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 6px;
}

/* ========================================
   Footer
   ======================================== */
.auth-footer {
    text-align: center;
    margin-top: var(--hq-space-8, 1.5rem);
    padding-top: var(--hq-space-7, 1.25rem);
    border-top: 1px solid var(--hq-color-border, #e2e8f0);
}

.footer-text {
    font-size: var(--hq-font-size-xs, 0.6875rem);
    color: var(--hq-color-text-muted, #94a3b8);
}

/* ========================================
   Loading Overlay
   ======================================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(248, 250, 252, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--hq-z-loading, 9999);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--hq-transition-base, 0.2s), visibility var(--hq-transition-base, 0.2s);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-box {
    background: var(--hq-color-surface, #fff);
    padding: var(--hq-space-8, 1.5rem) var(--hq-space-9, 2rem);
    border-radius: var(--hq-radius-lg, 12px);
    box-shadow: var(--hq-shadow-md, 0 4px 12px rgba(0, 0, 0, 0.08));
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--hq-space-5, 0.75rem);
}

.loading-spinner {
    width: 28px;
    height: 28px;
    border: 2px solid var(--hq-color-border, #e2e8f0);
    border-top-color: var(--hq-color-primary, #1e293b);
    border-radius: 50%;
    animation: hq-spin 0.7s linear infinite;
}

.loading-text {
    color: var(--hq-color-text-secondary, #64748b);
    font-size: var(--hq-font-size-base, 0.8125rem);
}

/* ========================================
   Mobile Responsive
   ======================================== */
@media (max-width: 480px) {
    body.auth-page {
        padding: var(--hq-space-6, 1rem);
    }

    .auth-card {
        padding: var(--hq-space-9, 2rem) var(--hq-space-7, 1.5rem);
        border-radius: var(--hq-radius-xl, 16px);
    }

    .logo-wrapper {
        width: 72px;
        height: 72px;
    }

    .logo-img {
        width: 44px;
        height: 44px;
    }

    .auth-title {
        font-size: var(--hq-font-size-xl, 1.25rem);
    }

    .form-input {
        font-size: 16px; /* iOS zoom prevention */
    }
}