/* =============================================
   DOCENT — Modern Minimal & Typography Style
   ============================================= */

/* 폰트는 _content/Umed.Core/umed-fonts.css 에서 자체 호스팅으로 온다(App.razor).
   Google Fonts CDN 을 쓰던 자리다 — 외부망이 막힌 디바이스에서 폰트가 오지 않았고,
   페이지마다 방문자 IP 가 외부로 나갔다. */

:root {
    /* ── 미니멀 라이트 테마 팔레트 ── */
    --docent-bg-main: #f8fafc;
    --docent-bg-surface: #ffffff;
    --docent-bg-subtle: #f1f5f9;
    --docent-bg-hover: #e2e8f0;

    /* ── 단색 테두리 (Box-shadow 대체) ── */
    --docent-border-light: #f1f5f9;
    --docent-border: #e2e8f0;
    --docent-border-strong: #cbd5e1;
    --docent-border-dark: #0f172a;

    /* ── 텍스트 Hierarchy ── */
    --docent-text-main: #0f172a;
    --docent-text-muted: #64748b;
    --docent-text-subtle: #94a3b8;
    --docent-text-inverse: #ffffff;

    /* ── 포인트 Accent ── */
    --docent-primary: #0f172a;
    --docent-accent: #2563eb;
    --docent-accent-hover: #1d4ed8;
    --docent-danger: #dc2626;
    --docent-success: #16a34a;
    --docent-warning: #d97706;

    /* ── 서체 ── */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ── 전역 리셋 ── */
html, body {
    font-family: var(--font-sans);
    background-color: var(--docent-bg-main);
    color: var(--docent-text-main);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ── 메인 레이아웃 ── */
.docent-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── 상단 네비게이션 바 (Minimal Header) ── */
.docent-navbar {
    background: var(--docent-bg-surface);
    border-bottom: 1px solid var(--docent-border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.docent-navbar .brand {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
    color: var(--docent-text-main);
}

.brand-text-container {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-univ-title {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--docent-text-muted);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.brand-system-name {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--docent-text-main) !important;
    letter-spacing: -0.5px;
    -webkit-text-fill-color: initial !important;
}

/* ── 로딩 스피너 (Minimal Typography Loader) ── */
.brand-loading-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 1rem;
}

.brand-loading-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--docent-text-main);
    margin-top: 1rem;
    letter-spacing: -0.2px;
}

/* ── 미니멀 푸터 ── */
.docent-footer {
    border-top: 1px solid var(--docent-border);
    background: var(--docent-bg-surface);
    padding: 1.5rem 2rem;
    margin-top: auto;
    font-size: 0.85rem;
    color: var(--docent-text-muted);
}

.docent-footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.docent-footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--docent-text-main);
}

/* ── 메인 컨텐츠 컨테이너 ── */
.docent-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding-top: 1.5rem;
    box-sizing: border-box;
}

/* ──────────────────────────────────────────────────
   [3. 사용자 메인 화면 - 5자리 코드 입력부 & 키패드]
   ────────────────────────────────────────────────── */
/* ──────────────────────────────────────────────────
   [3. 사용자 메인 화면 - 5자리 코드 입력부 & 키패드]
   ────────────────────────────────────────────────── */
.code-entry-container {
    text-align: center;
    max-width: 560px;
    width: 100%;
    padding: 3rem 2.5rem;
    background: var(--docent-bg-surface);
    border: 1px solid var(--docent-border);
    border-radius: 20px;
}

.code-entry-title {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--docent-text-main);
    letter-spacing: -0.75px;
    margin-bottom: 0.5rem;
}

.code-entry-subtitle {
    color: var(--docent-text-muted);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 2.25rem;
}

/* ── 스캐너/키보드 감지용 Visual Hidden Input ── */
.scanner-input {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 1px !important;
    height: 1px !important;
    opacity: 0 !important;
    pointer-events: none !important;
    border: none !important;
    outline: none !important;
    margin: 0 !important;
    padding: 0 !important;
    overflow: hidden !important;
    z-index: -1 !important;
}

/* 5자리 디스플레이 박스 */
.code-display {
    display: flex;
    justify-content: center;
    gap: 0.85rem;
    cursor: pointer;
}

.digit-box {
    width: 4.2rem;
    height: 5.2rem;
    background: var(--docent-bg-surface);
    border: 1.5px solid var(--docent-border-strong);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--docent-text-main) !important;
    transition: all 0.15s ease;
}

.digit-box.filled {
    border-color: var(--docent-border-dark);
    background: var(--docent-bg-subtle);
    color: var(--docent-text-main) !important;
}

.digit-box.active {
    border-color: var(--docent-accent);
    border-width: 2px;
    background: #eff6ff;
}

.digit-box.error {
    border-color: var(--docent-danger);
    background: #fef2f2;
}

/* ── 키패드 모드 토글 ([0-9], [A-Z] 정중앙 미니멀 정렬) ── */
.keypad-mode-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1.75rem;
    margin-bottom: 1.75rem;
}

.mode-btn {
    padding: 0.5rem 1.4rem;
    border: 1px solid var(--docent-border);
    border-radius: 24px;
    background: var(--docent-bg-subtle);
    color: var(--docent-text-muted);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
    outline: none;
}

.mode-btn:hover {
    background: var(--docent-bg-hover);
    color: var(--docent-text-main);
    border-color: var(--docent-border-strong);
}

.mode-btn.active {
    background: var(--docent-text-main);
    border-color: var(--docent-text-main);
    color: #ffffff !important;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.12);
}

/* 키패드 그리드 (시원한 비율 확장) */
.keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.85rem;
    max-width: 480px;
    margin: 0 auto;
}

.keypad-btn {
    height: 64px;
    border: 1px solid var(--docent-border);
    border-radius: 14px;
    background: var(--docent-bg-surface);
    color: var(--docent-text-main) !important;
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.keypad-btn:hover {
    background: var(--docent-bg-subtle);
    border-color: var(--docent-border-strong);
}

.keypad-btn:active {
    transform: scale(0.97);
    background: var(--docent-bg-hover);
}

.keypad-btn.key-clear {
    background: #fff5f5;
    border-color: #fecaca;
    color: var(--docent-danger) !important;
    font-size: 1.05rem;
    font-weight: 700;
}

.keypad-btn.key-clear:hover {
    background: #fee2e2;
}

.keypad-btn.key-submit {
    background: var(--docent-text-main);
    border: 1px solid var(--docent-text-main);
    color: #ffffff !important;
    font-size: 1.15rem;
    font-weight: 700;
}

.keypad-btn.key-submit:hover {
    background: #1e293b;
}

.keypad-btn.key-submit:disabled {
    opacity: 0.4;
    background: var(--docent-bg-subtle);
    border-color: var(--docent-border);
    color: var(--docent-text-subtle) !important;
    cursor: not-allowed;
}

/* ──────────────────────────────────────────────────
   [4. 관리자 테이블 & UI (Admin Data Grid & Controls)]
   ────────────────────────────────────────────────── */

/* 모던 미니멀 카드 */
.card-minimal {
    background: var(--docent-bg-surface);
    border: 1px solid var(--docent-border);
    border-radius: 12px;
    overflow: hidden;
}

/* 테이블 레이아웃 */
.table-minimal {
    width: 100%;
    border-collapse: collapse;
    background: var(--docent-bg-surface);
}

.table-minimal th {
    background: var(--docent-bg-subtle);
    color: var(--docent-text-muted);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--docent-border);
    border-right: 1px solid var(--docent-border);
}

.table-minimal th:last-child {
    border-right: none;
}

.table-minimal td {
    padding: 1rem;
    font-size: 0.925rem;
    color: var(--docent-text-main);
    border-bottom: 1px solid var(--docent-border);
    border-right: 1px solid var(--docent-border);
}

.table-minimal td:last-child {
    border-right: none;
}

.table-minimal tbody tr:hover {
    background: #f8fafc;
}

/* 미니멀 버튼 (Bordered Minimal) */
.btn-minimal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.45rem 0.9rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--docent-border-strong);
    background: var(--docent-bg-surface);
    color: var(--docent-text-main);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
}

.btn-minimal:hover {
    background: var(--docent-bg-subtle);
    color: var(--docent-text-main);
}

.btn-minimal-primary {
    background: var(--docent-text-main);
    border-color: var(--docent-text-main);
    color: #ffffff !important;
}

.btn-minimal-primary:hover {
    background: #1e293b;
    color: #ffffff !important;
}

.btn-minimal-danger {
    border-color: #fca5a5;
    color: var(--docent-danger);
    background: #fff5f5;
}

.btn-minimal-danger:hover {
    background: #fee2e2;
}

/* ── 남은 공간을 가득 채우는 대형 극장 모드 영상 시청 컴포넌트 ── */
.video-watch-container {
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1.5rem 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.video-header {
    margin-bottom: 1.25rem;
}

.video-header .video-title {
    font-size: 2.25rem;
    font-weight: 900;
    color: var(--docent-text-main);
    letter-spacing: -0.75px;
    line-height: 1.3;
    margin-top: 0.75rem;
    margin-bottom: 0;
}

.video-player-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    max-height: 75vh;
    background: #000000;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--docent-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    margin: 0 auto;
}

.video-player-wrapper iframe,
.video-player-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    object-fit: contain;
}

/* ── 미니멀 시스템 알림 Toast UI (blazor-error-ui 스타일 개편) ── */
#blazor-error-ui {
    display: none;
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    background: #0f172a;
    color: #ffffff;
    padding: 0.85rem 1.25rem;
    border-radius: 12px;
    border: 1px solid #334155;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    z-index: 9999;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    animation: toastSlideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes toastSlideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

#blazor-error-ui .reload {
    color: #38bdf8;
    text-decoration: underline;
    font-weight: 700;
    margin-left: 0.6rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    color: #94a3b8;
    margin-left: 0.8rem;
    font-size: 1rem;
    transition: color 0.15s ease;
}

#blazor-error-ui .dismiss:hover {
    color: #ffffff;
}

/* ──────────────────────────────────────────────────
   [5. 모바일 뷰포트 맞춤 최적화 (한 화면 100dvh 핏 레이아웃)]
   ────────────────────────────────────────────────── */
@media (max-width: 640px), (max-height: 820px) {
    html, body {
        height: 100vh;
        height: 100dvh;
        overflow: hidden;
    }

    .docent-app {
        height: 100vh;
        height: 100dvh;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        overflow: hidden;
    }

    .docent-navbar {
        padding: 0.65rem 1rem;
        flex-shrink: 0;
    }

    .brand-univ-title {
        font-size: 0.65rem;
    }

    .brand-system-name {
        font-size: 1.05rem;
    }

    .docent-content {
        padding: 0.5rem 1rem;
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        overflow: hidden;
    }

    .code-entry-container {
        padding: 0.75rem 0.5rem;
        max-width: 100%;
        border-radius: 16px;
        box-shadow: none;
        background: transparent;
        border: none;
    }

    .code-entry-title {
        font-size: 1.5rem;
        margin-bottom: 0.2rem;
    }

    .code-entry-subtitle {
        font-size: 0.85rem;
        margin-bottom: 0.85rem;
    }

    .code-display {
        gap: 0.45rem;
    }

    .digit-box {
        width: 3.1rem;
        height: 3.8rem;
        font-size: 1.6rem;
        border-radius: 10px;
    }

    .keypad-mode-toggle {
        gap: 0.5rem;
        margin-top: 0.85rem;
        margin-bottom: 0.85rem;
    }

    .mode-btn {
        padding: 0.35rem 1.1rem;
        font-size: 0.825rem;
    }

    .keypad {
        gap: 0.45rem;
        max-width: 340px;
    }

    .keypad-btn {
        height: 48px;
        font-size: 1.3rem;
        border-radius: 10px;
    }

    .keypad-btn.key-clear,
    .keypad-btn.key-submit {
        font-size: 0.925rem;
    }

    .docent-footer {
        padding: 0.65rem 1rem;
        font-size: 0.75rem;
        flex-shrink: 0;
    }
}