/* ============================================================
   須木栗 Analytics Dashboard — Stylesheet
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+JP:wght@300;400;500;600;700&display=swap');

/* ==================== Variables ==================== */
:root {
    --bg-dark: #0f1117;
    --bg-card: #1a1d27;
    --bg-card-hover: #22263a;
    --bg-sidebar: #141620;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-accent: rgba(212, 175, 55, 0.25);

    --text-primary: #e8e6e3;
    --text-secondary: #8b8fa3;
    --text-muted: #5a5e72;

    --accent-gold: #d4af37;
    --accent-gold-light: #f0d878;
    --accent-chestnut: #a0725a;
    --accent-chestnut-light: #c49a7e;

    --green: #34d399;
    --red: #f87171;
    --blue: #60a5fa;
    --purple: #a78bfa;
    --orange: #fb923c;
    --cyan: #22d3ee;

    --sidebar-width: 240px;
    --topbar-height: 64px;
    --radius: 12px;
    --radius-sm: 8px;

    --font-main: 'Inter', 'Noto Sans JP', sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== Reset ==================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
table { border-collapse: collapse; width: 100%; }

/* ==================== LOGIN SCREEN ==================== */
.login-screen {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f1117 0%, #1a1530 50%, #0f1117 100%);
    z-index: 9999;
    overflow: hidden;
}

.login-particles {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.login-particles .particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent-gold);
    border-radius: 50%;
    opacity: 0;
    animation: float-particle 6s infinite ease-in-out;
}

@keyframes float-particle {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    20% { opacity: 0.6; }
    80% { opacity: 0.3; }
    100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

.login-card {
    position: relative;
    z-index: 1;
    background: rgba(26, 29, 39, 0.85);
    backdrop-filter: blur(30px);
    border: 1px solid var(--border-accent);
    border-radius: 20px;
    padding: 3.5rem 3rem;
    width: 90%;
    max-width: 420px;
    text-align: center;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5), 0 0 80px rgba(212, 175, 55, 0.08);
    animation: card-appear 0.8s ease-out;
}

@keyframes card-appear {
    from { opacity: 0; transform: translateY(30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.login-logo-img {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 2px solid var(--accent-gold);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.3);
    margin-bottom: 1.5rem;
}

.login-title {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    background: linear-gradient(135deg, var(--accent-gold-light), var(--accent-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.3rem;
}

.login-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.login-input-group {
    display: flex;
    gap: 0.5rem;
}

.login-input {
    flex: 1;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.login-input:focus {
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.15);
}

.login-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: linear-gradient(135deg, var(--accent-gold), #b8962e);
    color: #0f1117;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    white-space: nowrap;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.35);
}

.login-btn-icon {
    transition: transform 0.3s;
}

.login-btn:hover .login-btn-icon {
    transform: translateX(3px);
}

.login-error {
    color: var(--red);
    font-size: 0.82rem;
    margin-top: 1rem;
    animation: shake 0.4s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

/* ==================== DASHBOARD LAYOUT ==================== */
.dashboard {
    display: flex;
    min-height: 100vh;
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.5rem 1.2rem;
    border-bottom: 1px solid var(--border-subtle);
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1.5px solid var(--accent-gold);
}

.sidebar-brand {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(212, 175, 55, 0.12);
    color: var(--accent-gold-light);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.nav-icon { font-size: 1.1rem; }

.sidebar-footer {
    padding: 1rem 1.2rem;
    border-top: 1px solid var(--border-subtle);
}

.logout-btn {
    width: 100%;
    padding: 0.65rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.82rem;
    border: 1px solid var(--border-subtle);
    transition: var(--transition);
}

.logout-btn:hover {
    background: rgba(248, 113, 113, 0.1);
    color: var(--red);
    border-color: rgba(248, 113, 113, 0.3);
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Top Bar */
.top-bar {
    position: sticky;
    top: 0;
    height: var(--topbar-height);
    background: rgba(15, 17, 23, 0.85);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 50;
}

.menu-toggle-btn {
    display: none;
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-right: 1rem;
}

.page-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.month-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.month-select {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 0.4rem 0.8rem;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: var(--font-main);
    outline: none;
    cursor: pointer;
}

.month-select:focus {
    border-color: var(--accent-gold);
}

.month-select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

.data-status {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: var(--transition);
}

.status-dot.connected {
    background: var(--green);
    box-shadow: 0 0 8px rgba(52, 211, 153, 0.5);
}

.status-dot.demo {
    background: var(--orange);
    box-shadow: 0 0 8px rgba(251, 146, 60, 0.5);
}

.status-dot.error {
    background: var(--red);
    box-shadow: 0 0 8px rgba(248, 113, 113, 0.5);
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 1.5rem 2rem 3rem;
}

.section { display: none; }
.section.active { display: block; animation: section-in 0.4s ease-out; }

@keyframes section-in {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== KPI CARDS ==================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.3rem 1.2rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-gold), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.kpi-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.kpi-card:hover::before { opacity: 1; }

.kpi-icon {
    font-size: 1.8rem;
    line-height: 1;
    flex-shrink: 0;
}

.kpi-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.kpi-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
    letter-spacing: 0.02em;
}

.kpi-value {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.kpi-change {
    font-size: 0.75rem;
    font-weight: 600;
}

.kpi-change.positive { color: var(--green); }
.kpi-change.negative { color: var(--red); }
.kpi-change.neutral { color: var(--text-muted); }

/* ==================== CHART CARDS ==================== */
.chart-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.3rem 1.5rem;
    transition: var(--transition);
}

.chart-card:hover {
    border-color: var(--border-accent);
}

.chart-card.chart-wide {
    grid-column: 1 / -1;
}

.chart-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-subtle);
}

.chart-container {
    position: relative;
    height: 300px;
}

.chart-doughnut-container {
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ==================== TABLE CARDS ==================== */
.table-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.3rem 1.5rem;
    margin-bottom: 1rem;
}

.table-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--border-subtle);
}

.table-scroll {
    overflow-x: auto;
}

.data-table {
    font-size: 0.85rem;
}

.data-table thead th {
    padding: 0.7rem 1rem;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
}

.data-table tbody td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
    white-space: nowrap;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* ==================== DETAIL KPI ==================== */
.detail-kpi-row, .gsc-kpi-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.detail-kpi-card, .gsc-kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.detail-kpi-card:hover, .gsc-kpi-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-2px);
}

.detail-kpi-label, .gsc-kpi-label {
    display: block;
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.detail-kpi-value, .gsc-kpi-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold-light);
}

/* ==================== ANALYSIS SECTION ==================== */
.analysis-container {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.analysis-loading {
    text-align: center;
    padding: 4rem;
    color: var(--text-secondary);
}

.analysis-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-subtle);
    border-top-color: var(--accent-gold);
    border-radius: 50%;
    margin: 0 auto 1rem;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.analysis-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 1.5rem 1.8rem;
    border-left: 3px solid var(--accent-gold);
    transition: var(--transition);
}

.analysis-card:hover {
    border-color: var(--border-accent);
    background: var(--bg-card-hover);
}

.analysis-card.card-good { border-left-color: var(--green); }
.analysis-card.card-warning { border-left-color: var(--orange); }
.analysis-card.card-danger { border-left-color: var(--red); }
.analysis-card.card-info { border-left-color: var(--blue); }

.analysis-card-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.6rem;
}

.analysis-card-icon { font-size: 1.2rem; }

.analysis-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.analysis-card-body {
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.analysis-card-body strong {
    color: var(--accent-gold-light);
    font-weight: 600;
}

.analysis-card-suggestion {
    margin-top: 0.8rem;
    padding: 0.8rem 1rem;
    background: rgba(212, 175, 55, 0.06);
    border-radius: var(--radius-sm);
    font-size: 0.84rem;
    color: var(--text-primary);
    border: 1px solid rgba(212, 175, 55, 0.12);
}

.analysis-card-suggestion::before {
    content: '💡 改善案：';
    font-weight: 600;
    color: var(--accent-gold-light);
}

/* ==================== MODAL ==================== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius);
    padding: 2rem 2.5rem;
    width: 90%;
    max-width: 500px;
    animation: card-appear 0.3s ease-out;
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.modal-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-field {
    margin-bottom: 1rem;
}

.modal-field label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
    font-weight: 500;
}

.modal-input {
    width: 100%;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    padding: 0.7rem 0.9rem;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-family: var(--font-main);
    outline: none;
    transition: var(--transition);
}

.modal-input:focus {
    border-color: var(--accent-gold);
}

.modal-actions {
    display: flex;
    gap: 0.6rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.modal-btn {
    padding: 0.65rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
}

.modal-btn-primary {
    background: linear-gradient(135deg, var(--accent-gold), #b8962e);
    color: #0f1117;
}

.modal-btn-primary:hover {
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.35);
}

.modal-btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.modal-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
}

.modal-btn-ghost {
    color: var(--text-secondary);
}

.modal-btn-ghost:hover {
    color: var(--text-primary);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    .main-content {
        margin-left: 0;
    }

    .menu-toggle-btn {
        display: block;
    }

    .kpi-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    .chart-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .content-area {
        padding: 1rem;
    }

    .top-bar {
        padding: 0 1rem;
    }

    .top-bar-right {
        gap: 0.8rem;
    }

    .month-selector label {
        display: none;
    }

    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }

    .kpi-card {
        padding: 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .kpi-value {
        font-size: 1.3rem;
    }

    .chart-container {
        height: 250px;
    }

    .login-card {
        padding: 2.5rem 1.5rem;
    }

    .login-input-group {
        flex-direction: column;
    }

    .modal-actions {
        flex-direction: column;
    }

    .detail-kpi-row, .gsc-kpi-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==================== SIDEBAR OVERLAY (mobile) ==================== */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    display: none;
}

.sidebar-overlay.active {
    display: block;
}