:root {
    color-scheme: light;
    --bg-page: #f4f7fb;
    --bg-surface: #ffffff;
    --bg-surface-soft: #f8fafc;
    --bg-surface-muted: #f3f4f6;
    --bg-elevated: #ffffff;
    --bg-input: #ffffff;
    --bg-input-readonly: #f3f4f6;
    --border-subtle: #e5e7eb;
    --border-strong: #d1d5db;
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    --text-soft: #9ca3af;
    --accent: #111827;
    --accent-contrast: #ffffff;
    --accent-soft: #eff6ff;
    --accent-border: #bfdbfe;
    --accent-link: #1d4ed8;
    --accent-link-hover: #1e40af;
    --success: #059669;
    --success-soft: #ecfdf5;
    --danger: #dc2626;
    --danger-soft: #fef2f2;
    --warning: #d97706;
    --shadow-card: 0 6px 18px rgba(0, 0, 0, 0.08);
    --shadow-soft: 0 1px 2px rgba(15, 23, 42, 0.04);
    --logo-shell-bg: transparent;
    --logo-shell-border: transparent;
    --logo-shell-shadow: none;
    --chart-grid: #eef2f7;
    --chart-track: #e5e7eb;
    --chart-primary: #111827;
    --chart-muted: #e5e7eb;
    --chart-text: #111827;
    --chart-subtext: #6b7280;
    --progress-track: #e5e7eb;
    --toggle-bg: #ffffff;
    --toggle-border: #d1d5db;
    --toggle-hover: #f9fafb;
}

[data-theme="dark"] {
    color-scheme: dark;
    --bg-page: #08111f;
    --bg-surface: #111b2e;
    --bg-surface-soft: #152238;
    --bg-surface-muted: #1a2740;
    --bg-elevated: #18243b;
    --bg-input: #0f1728;
    --bg-input-readonly: #172338;
    --border-subtle: #2a3a55;
    --border-strong: #3b4f6d;
    --text-primary: #f8fafc;
    --text-secondary: #dbe4f0;
    --text-muted: #9fb0c7;
    --text-soft: #7f93ad;
    --accent: #60a5fa;
    --accent-contrast: #06101d;
    --accent-soft: rgba(37, 99, 235, 0.14);
    --accent-border: rgba(96, 165, 250, 0.35);
    --accent-link: #93c5fd;
    --accent-link-hover: #bfdbfe;
    --success: #34d399;
    --success-soft: rgba(16, 185, 129, 0.12);
    --danger: #f87171;
    --danger-soft: rgba(248, 113, 113, 0.12);
    --warning: #fbbf24;
    --shadow-card: 0 14px 34px rgba(0, 0, 0, 0.34);
    --shadow-soft: 0 1px 0 rgba(255, 255, 255, 0.03);
    --logo-shell-bg: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    --logo-shell-border: rgba(148, 163, 184, 0.28);
    --logo-shell-shadow: 0 10px 28px rgba(0, 0, 0, 0.38), inset 0 1px 0 rgba(255, 255, 255, 0.92);
    --chart-grid: #334155;
    --chart-track: #334155;
    --chart-primary: #f8fafc;
    --chart-muted: #475569;
    --chart-text: #f8fafc;
    --chart-subtext: #94a3b8;
    --progress-track: #334155;
    --toggle-bg: #152238;
    --toggle-border: #3b4f6d;
    --toggle-hover: #1b2a44;
}

body {
    background: var(--bg-page);
    color: var(--text-primary);
}

.card,
.mini-card,
#reportArea {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.card,
.mini-card {
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-subtle);
}

.topbar p,
.muted,
.mini-card span,
.ratio-card span,
.analysis-label,
.comparison-metric-card small,
.ai-progress-text,
.legal-meta,
.comparison-tablo-cell {
    color: var(--text-muted);
}

.card h2,
.analysis-group-title,
.analysis-value,
.analysis-value-inline,
.ratio-card strong,
.financial-grid h3,
.projection-value,
.ai-analysis-section-title {
    color: var(--text-primary);
}

.financial-grid h4,
.form-row label,
.comparison-table thead th,
.comparison-table th,
.comparison-table td,
#sonuc,
.ai-analysis-section-body,
.legal-content p,
.legal-content li {
    color: var(--text-secondary);
}

select,
input,
.form-row input,
.projection-pct {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
}

.form-row input[readonly] {
    background: var(--bg-input-readonly);
}

button,
#createProjectionBtn,
.upgrade-cta-btn,
.data-mode-badge {
    background: var(--accent);
    color: var(--accent-contrast);
}

button.btn-secondary,
.data-mode-tab {
    background: var(--bg-surface);
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
}

button.btn-secondary:hover,
.theme-toggle:hover {
    background: var(--toggle-hover);
}

.data-mode-tab.active {
    background: var(--accent);
    color: var(--accent-contrast);
    border-color: var(--accent);
}

.ratio-card,
.analysis-card,
.chart-box,
.projection-toolbar {
    background: var(--bg-surface-soft);
    border-color: var(--border-subtle);
}

.ratio-card.highlight {
    background: linear-gradient(180deg, #1e293b 0%, #111827 100%);
}

[data-theme="dark"] .ratio-card.highlight {
    background: linear-gradient(180deg, #2563eb 0%, #1d4ed8 100%);
}

.ratio-card.highlight span {
    color: var(--text-soft);
}

.ratio-card.highlight strong {
    color: #ffffff;
}

.projection-row {
    background: var(--accent-soft);
    border-left-color: var(--accent-link);
}

.projection-label {
    color: var(--accent-link);
}

.projection-pct {
    border-color: var(--accent-border);
}

.projection-table-card {
    background: var(--bg-surface-soft);
    border-color: #0284c7;
}

.comparison-card {
    background: rgba(124, 58, 237, 0.08);
    border-color: #8b5cf6;
}

.upgrade-notice {
    background: linear-gradient(135deg, var(--accent-soft) 0%, var(--bg-surface-soft) 100%);
    border-color: var(--accent-border);
    color: var(--text-secondary);
}

.upgrade-notice a,
.legal-consent a,
.legal-content a,
.legal-footer-links a:hover,
.login-legal-footer a:hover,
.dashboard-legal-footer a:hover {
    color: var(--accent-link);
}

.upgrade-notice a:hover,
.legal-consent a:hover {
    color: var(--accent-link-hover);
}

.ai-analysis-empty,
.ai-analysis-message,
.ai-analysis-intro,
.ai-analysis-section-card {
    background: var(--bg-surface-soft);
    border-color: var(--border-subtle);
    color: var(--text-secondary);
}

.ai-analysis-message {
    background: var(--danger-soft);
    border-color: rgba(248, 113, 113, 0.35);
    color: var(--danger);
}

.ai-analysis-section-head {
    border-bottom-color: var(--border-subtle);
}

.ai-analysis-section-num,
.loader {
    border-top-color: var(--accent);
}

.loader {
    border-color: var(--border-strong);
}

.comparison-table th,
.comparison-table td {
    border-bottom-color: var(--border-subtle);
}

.comparison-table thead th {
    background: var(--bg-surface-muted);
}

.comparison-table tbody tr:hover {
    background: var(--bg-surface-soft);
}

.comparison-pct-up {
    color: var(--success);
}

.comparison-pct-down {
    color: var(--danger);
}

.ai-progress-track {
    background: var(--progress-track);
}

.login-legal-footer,
.dashboard-legal-footer,
.legal-footer-links {
    border-top-color: var(--border-subtle);
}

.login-legal-footer a,
.dashboard-legal-footer a,
.legal-footer-links a,
.legal-back,
.dashboard-legal-footer span {
    color: var(--text-muted);
}

.legal-back:hover {
    color: var(--text-primary);
}

.brand-logo-shell {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    padding: 10px 16px;
    border-radius: 18px;
    background: var(--logo-shell-bg);
    border: 1px solid var(--logo-shell-border);
    box-shadow: var(--logo-shell-shadow);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 12px;
    border: 1px solid var(--toggle-border);
    background: var(--toggle-bg);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.theme-toggle-icon {
    font-size: 15px;
    line-height: 1;
}

[data-theme="light"] .theme-toggle-icon-moon,
[data-theme="dark"] .theme-toggle-icon-sun {
    display: none;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
    flex-shrink: 0;
}

.page-top-actions {
    display: flex;
    justify-content: flex-end;
    max-width: 1200px;
    margin: 0 auto 16px;
    padding: 0 18px;
    box-sizing: border-box;
}

.login-topbar {
    max-width: 500px;
    margin: 0 auto 16px;
    padding-top: 24px;
}

.login-input {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--border-strong);
    margin-bottom: 14px;
    background: var(--bg-input);
    color: var(--text-primary);
    box-sizing: border-box;
}

.login-input:last-of-type,
.login-input-last {
    margin-bottom: 20px;
}

#loginError {
    color: var(--danger) !important;
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .analysis-group-title,
[data-theme="dark"] .financial-grid h4 {
    border-bottom-color: var(--border-subtle);
}

[data-theme="dark"] .page-top-actions,
[data-theme="dark"] .login-topbar {
    padding-top: 8px;
}

[data-theme="dark"] .brand-logo-shell {
    backdrop-filter: blur(2px);
}

[data-theme="dark"] .upgrade-cta-btn {
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28);
}

[data-theme="dark"] .theme-toggle {
    box-shadow: var(--shadow-soft);
}

[data-theme="dark"] select option {
    background: #111b2e;
    color: #f8fafc;
}