/* ==========================================================================
   LOGOS 초등 국어 통권수업 마스터 프로그램 - Modern Design System
   ========================================================================== */

:root {
    --primary: #1e293b;
    --primary-light: #334155;
    --accent-blue: #2563eb;
    --accent-teal: #0d9488;
    --accent-amber: #d97706;
    --accent-purple: #7c3aed;
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-serif: 'Nanum Myeongjo', Georgia, serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.app-header {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: #ffffff;
    padding: 1.25rem 2rem;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(13, 148, 136, 0.4);
}

.logo-text h1 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-text h1 span {
    color: #38bdf8;
}

.logo-text .subtitle {
    font-size: 0.85rem;
    color: #94a3b8;
    font-weight: 400;
}

.header-badges {
    display: flex;
    gap: 0.5rem;
}

.badge {
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.badge-bible {
    background-color: rgba(13, 148, 136, 0.2);
    color: #2dd4bf;
    border: 1px solid rgba(45, 212, 191, 0.3);
}

.badge-curriculum {
    background-color: rgba(37, 99, 235, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(96, 165, 250, 0.3);
}

/* --------------------------------------------------------------------------
   Main Layout & Panels
   -------------------------------------------------------------------------- */
.main-layout {
    max-width: 1440px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 480px 1fr;
    gap: 1.75rem;
    flex: 1;
    width: 100%;
}

@media (max-width: 1100px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}

.card {
    background-color: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    padding: 1.75rem;
}

/* --------------------------------------------------------------------------
   Input Panel (Left Form)
   -------------------------------------------------------------------------- */
.panel-header {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.panel-header h2 {
    font-size: 1.25rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}

.panel-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.quick-templates {
    background-color: #f1f5f9;
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.quick-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    display: block;
    margin-bottom: 0.5rem;
}

.template-btns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.btn-template {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.35rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn-template:hover {
    border-color: var(--accent-blue);
    background-color: #eff6ff;
    transform: translateY(-2px);
}

.btn-template .t-grade {
    font-size: 0.7rem;
    color: var(--accent-teal);
    font-weight: 700;
}

.btn-template .t-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.master-form .form-group {
    margin-bottom: 1.25rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.flex-1 { flex: 1; }
.flex-2 { flex: 2; }

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.4rem;
}

label .req {
    color: #ef4444;
}

input[type="text"], select, textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--text-main);
    background-color: #ffffff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="text"]:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

textarea {
    resize: vertical;
}

/* Dynamic Standards Checkbox Grid */
.standards-checkbox-grid {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    max-height: 180px;
    overflow-y: auto;
}

.std-chip {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.825rem;
    padding: 0.35rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.15s ease;
    user-select: none;
}

.std-chip:hover {
    background-color: #eff6ff;
}

.std-chip input[type="checkbox"] {
    margin-top: 0.15rem;
    width: 16px;
    height: 16px;
    accent-color: var(--accent-blue);
}

.std-chip span {
    color: var(--text-main);
    line-height: 1.4;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
    color: #ffffff;
    border: none;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    width: 100%;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: #ffffff;
    color: var(--primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-secondary:hover {
    background: #f1f5f9;
    border-color: var(--border-hover);
}

/* --------------------------------------------------------------------------
   Output Panel & Tabs
   -------------------------------------------------------------------------- */
.placeholder-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    background: #f1f5f9;
    color: var(--accent-teal);
    font-size: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.placeholder-state h3 {
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.features-preview {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 420px;
    margin: 2rem auto 0;
    text-align: left;
}

.feat-item {
    background: #f8fafc;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.feat-item i {
    color: var(--accent-teal);
    margin-right: 0.5rem;
}

.hidden {
    display: none !important;
}

/* Summary Card */
.summary-card {
    background: linear-gradient(135deg, #f0fdf4 0%, #e0f2fe 100%);
    border: 1px solid #bbf7d0;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.sum-top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
}

.sum-grade-badge {
    background: var(--accent-teal);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.sum-title {
    font-size: 1.35rem;
    color: var(--primary);
    font-weight: 700;
}

.sum-chapter {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
}

.sum-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.meta-tag {
    font-size: 0.8rem;
    padding: 0.25rem 0.6rem;
    background: #ffffff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    color: var(--primary);
    font-weight: 500;
}

.type-tag {
    background: #fef3c7;
    border-color: #fde68a;
    color: #92400e;
    font-weight: 700;
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 1.5rem;
    overflow-x: auto;
}

.tab-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.25rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    white-space: nowrap;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.pane-header h3 {
    font-size: 1.15rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pane-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Tab 1: Slide Script & NotebookLM
   -------------------------------------------------------------------------- */
.notebooklm-card {
    background: #1e293b;
    color: #f8fafc;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.notebooklm-card .card-badge {
    font-size: 0.8rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.code-box {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    line-height: 1.6;
    background: #0f172a;
    padding: 1rem;
    border-radius: var(--radius-sm);
    color: #e2e8f0;
    white-space: pre-wrap;
    word-break: break-all;
    border: 1px solid #334155;
    max-height: 250px;
    overflow-y: auto;
}

.slides-sequence {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.slide-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.slide-head {
    background: #f8fafc;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.slide-num {
    background: var(--primary);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.slide-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
}

.slide-body {
    padding: 1.25rem;
}

.slide-section {
    margin-bottom: 1rem;
}

.slide-section:last-child {
    margin-bottom: 0;
}

.slide-section-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-teal);
    margin-bottom: 0.3rem;
    text-transform: uppercase;
}

.slide-bullets {
    list-style: none;
    margin-left: 0;
}

.slide-bullets li {
    font-size: 0.9rem;
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: 0.3rem;
}

.slide-bullets li::before {
    content: "•";
    color: var(--accent-blue);
    font-weight: bold;
    position: absolute;
    left: 0.2rem;
}

.teacher-script {
    background: #fffbeb;
    border-left: 4px solid var(--accent-amber);
    padding: 0.85rem 1rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.875rem;
    color: #78350f;
    line-height: 1.5;
}

.teacher-script strong {
    color: #92400e;
}

/* --------------------------------------------------------------------------
   Tab 2: Worksheet Paper (Printable A4) & Custom Formats
   -------------------------------------------------------------------------- */
.worksheet-paper {
    background: #ffffff;
    border: 2px solid #cbd5e1;
    border-radius: 0;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-md);
    color: #1e293b;
    font-family: var(--font-sans);
    max-width: 800px;
    margin: 0 auto;
}

.ws-header {
    text-align: center;
    border-bottom: 3px double #0f172a;
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
}

.ws-header h1 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: #0f172a;
    letter-spacing: -0.01em;
    margin-bottom: 0.4rem;
}

.ws-header .ws-sub {
    font-size: 0.9rem;
    color: #475569;
    font-weight: 600;
}

.ws-info-bar {
    display: flex;
    justify-content: space-between;
    border: 1px solid #0f172a;
    padding: 0.6rem 1rem;
    margin-bottom: 1.75rem;
    font-size: 0.85rem;
    background-color: #f8fafc;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.ws-section {
    margin-bottom: 2rem;
}

.ws-sec-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: #0f172a;
    background: #f1f5f9;
    padding: 0.5rem 0.8rem;
    border-left: 5px solid var(--accent-blue);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ws-sec-title.bible-sec {
    border-left-color: var(--accent-teal);
    background: #f0fdf4;
}

.ws-q-box {
    margin-bottom: 1.25rem;
    padding-left: 0.5rem;
}

.ws-q-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.ws-q-desc {
    font-size: 0.85rem;
    color: #475569;
    margin-bottom: 0.75rem;
}

.ws-writing-box {
    border: 1px solid #94a3b8;
    border-radius: 4px;
    min-height: 85px;
    background: repeating-linear-gradient(
        transparent,
        transparent 27px,
        #e2e8f0 28px
    );
    margin-top: 0.5rem;
}

.ws-writing-box-sm {
    min-height: 55px;
}

/* 긴글쓰기 작성 영역 - 3줄 이상 확장 (min-height 320px) */
.ws-writing-box-lg {
    min-height: 320px;
    background: repeating-linear-gradient(
        transparent,
        transparent 29px,
        #cbd5e1 30px
    );
}

/* 교사용 예시 답안 하이라이트 박스 */
.ws-answer-key {
    display: none;
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-left: 4px solid #16a34a;
    padding: 0.75rem 1rem;
    border-radius: 4px;
    font-size: 0.875rem;
    color: #166534;
    margin-top: 0.6rem;
    line-height: 1.5;
}

.show-answers .ws-answer-key {
    display: block !important;
}

.ws-answer-key strong {
    color: #15803d;
}

.ws-outline-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.ws-outline-box {
    border: 1px solid #94a3b8;
    border-radius: 4px;
    padding: 0.5rem;
    background: #f8fafc;
    min-height: 110px;
}

.ws-outline-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.3rem;
    text-align: center;
    border-bottom: 1px dashed #cbd5e1;
    padding-bottom: 0.2rem;
}

.ws-vocab-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
}

.ws-vocab-table th, .ws-vocab-table td {
    border: 1px solid #94a3b8;
    padding: 0.6rem;
    font-size: 0.875rem;
    text-align: left;
}

.ws-vocab-table th {
    background-color: #f1f5f9;
    font-weight: 700;
    color: #0f172a;
}

/* --------------------------------------------------------------------------
   Tab 3: Teacher Guide & Extended Activities
   -------------------------------------------------------------------------- */
.guide-flow {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 2.5rem;
}

.flow-step {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    position: relative;
    border-left: 5px solid var(--accent-blue);
}

.flow-step.step-intro { border-left-color: #3b82f6; }
.flow-step.step-main { border-left-color: #10b981; }
.flow-step.step-wrap { border-left-color: #f59e0b; }

.flow-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.flow-time {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-blue);
    background: #eff6ff;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
}

.flow-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
}

.flow-content {
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.6;
}

.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.act-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.act-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-blue);
}

.act-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    background: #f1f5f9;
    color: var(--accent-teal);
    margin-bottom: 0.5rem;
}

.act-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.act-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.app-footer {
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
    text-align: center;
    padding: 1.25rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: auto;
}

/* --------------------------------------------------------------------------
   @media print (A4 Printable Worksheet Optimization)
   -------------------------------------------------------------------------- */
@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
    }

    .app-header,
    .input-panel,
    .tabs-nav,
    .pane-header.no-print,
    .summary-card,
    .notebooklm-card,
    .slides-sequence,
    .guide-flow,
    .activity-grid,
    .no-print,
    .app-footer {
        display: none !important;
    }

    .main-layout {
        display: block !important;
        max-width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    .output-panel {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        background: transparent !important;
    }

    .tab-pane {
        display: none !important;
    }

    .tab-pane#tab-worksheet {
        display: block !important;
    }

    .worksheet-paper {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        max-width: 100% !important;
        width: 100% !important;
    }

    @page {
        size: A4 portrait;
        margin: 15mm 15mm 15mm 15mm;
    }
}

/* --------------------------------------------------------------------------
   AI & Settings Features
   -------------------------------------------------------------------------- */
.btn-api-settings {
    background: transparent;
    color: #cbd5e1;
    border: 1px solid #475569;
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.btn-api-settings:hover {
    color: #ffffff;
    border-color: #94a3b8;
    background: rgba(255,255,255,0.1);
}

.ai-scan-section {
    background: #fdf2f8;
    border: 1px solid #fbcfe8;
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}
.ai-scan-header .quick-title {
    color: #be185d;
    font-size: 0.9rem;
}
.ai-scan-header p {
    font-size: 0.85rem;
    color: #831843;
    margin-bottom: 1rem;
}
.ai-upload-box {
    border: 2px dashed #f472b6;
    border-radius: var(--radius-sm);
    padding: 2rem 1rem;
    text-align: center;
    background: #fff;
    cursor: pointer;
    transition: all 0.2s;
    color: #db2777;
}
.ai-upload-box:hover {
    background: #fdf2f8;
    border-color: #db2777;
}
.ai-upload-box i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}
.ai-upload-box p {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 0;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.7);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.modal-content {
    background: #fff;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.modal-header {
    background: #f8fafc;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h3 {
    font-size: 1.1rem;
    color: var(--primary);
}
.btn-close {
    background: none; border: none; font-size: 1.25rem; color: #64748b; cursor: pointer;
}
.modal-body {
    padding: 1.5rem;
}
.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: #f8fafc;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(15, 23, 42, 0.9);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.spinner {
    width: 60px; height: 60px;
    border: 5px solid rgba(255,255,255,0.2);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }