/* ==========================================
   TOOLS24.COM THEME VARIABLES
   Change these hex codes to match your exact brand
   ========================================== */
:root {
    /* Brand Colors */
    --primary: #2563eb;        /* Main buttons, links, active tabs */
    --primary-hover: #1d4ed8;   /* Hover state for primary */
    --primary-soft: #eff6ff;   /* Light background for primary elements */
    
    /* Backgrounds & Surfaces */
    --bg: #f8fafc;             /* Main website background */
    --bg-elev: #ffffff;        /* Cards, modals, inputs */
    --bg-soft: #f1f5f9;        /* Hover states, subtle backgrounds */
    
    /* Typography */
    --text: #0f172a;           /* Main text */
    --text-muted: #64748b;     /* Secondary text */
    
    /* Borders & Effects */
    --border: #e2e8f0;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #d97706;
    --radius: 12px;
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
    --shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.15);
}

[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-soft: #1e293b;
    
    --bg: #0f172a;
    --bg-elev: #1e293b;
    --bg-soft: #334155;
    
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    
    --border: #334155;
    --danger: #ef4444;
    --success: #22c55e;
    --warning: #fbbf24;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.6);
}

/* ==========================================
   GLOBAL RESET & BASE STYLES
   ========================================== */
* { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 
    background: var(--bg); 
    color: var(--text); 
    line-height: 1.5; 
    transition: background-color 0.3s ease, color 0.3s ease;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }
.hidden { display: none !important; }

/* ==========================================
   HEADER & FOOTER (Matches Tools24 style)
   ========================================== */
.t24-header, .t24-footer { 
    background: var(--bg-elev); 
    border-bottom: 1px solid var(--border); 
    padding: 15px 0; 
    position: sticky; 
    top: 0; 
    z-index: 100; 
    box-shadow: var(--shadow-sm);
}
.t24-header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-weight: 800; font-size: 22px; color: var(--text); text-decoration: none; letter-spacing: -0.5px; }
.logo span { color: var(--primary); }
.btn-icon { 
    background: var(--bg-soft); 
    border: 1px solid var(--border); 
    width: 40px; height: 40px; 
    border-radius: 50%; 
    cursor: pointer; 
    font-size: 16px; 
    display: flex; align-items: center; justify-content: center;
    transition: all 0.2s;
}
.btn-icon:hover { background: var(--border); }
.t24-footer { margin-top: 40px; text-align: center; color: var(--text-muted); border-top: 1px solid var(--border); box-shadow: none; }

/* ==========================================
   MAIN LAYOUT & BREADCRUMB
   ========================================== */
.main-content { padding: 20px 16px; }
.breadcrumb { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--primary); text-decoration: none; font-weight: 500; }
.breadcrumb a:hover { text-decoration: underline; }

/* ==========================================
   CARDS & SECTIONS
   ========================================== */
.tool-header { margin-bottom: 24px; }
.tool-header h1 { font-size: 28px; font-weight: 800; margin-bottom: 8px; letter-spacing: -0.5px; }
.tool-header p { color: var(--text-muted); margin-bottom: 12px; font-size: 16px; }
.privacy-badge { 
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--primary-soft); 
    color: var(--primary); 
    padding: 6px 12px; 
    border-radius: 20px; 
    font-size: 13px; 
    font-weight: 600; 
    border: 1px solid rgba(37, 99, 235, 0.1);
}

.card { 
    background: var(--bg-elev); 
    border: 1px solid var(--border); 
    border-radius: var(--radius); 
    box-shadow: var(--shadow-sm); 
    padding: 24px; 
    margin-bottom: 24px; 
    transition: box-shadow 0.3s ease;
}
.card:hover { box-shadow: var(--shadow); }
.active-section { display: block; }

/* ==========================================
   BUTTONS (Premium Utility Style)
   ========================================== */
.btn { 
    display: inline-flex; align-items: center; justify-content: center; gap: 8px; 
    padding: 10px 18px; 
    border-radius: 8px; 
    border: 1px solid var(--border); 
    background: var(--bg-elev); 
    color: var(--text); 
    font-weight: 600; 
    font-size: 14px; 
    cursor: pointer; 
    transition: all 0.2s ease; 
    box-shadow: var(--shadow-sm);
}
.btn:hover { background: var(--bg-soft); border-color: var(--text-muted); }
.btn:active { transform: translateY(1px); box-shadow: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }

.btn-primary { 
    background: var(--primary); 
    color: #ffffff; 
    border-color: var(--primary); 
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}
.btn-primary:hover { 
    background: var(--primary-hover); 
    border-color: var(--primary-hover); 
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.btn-danger { 
    color: var(--danger); 
    border-color: rgba(220, 38, 38, 0.3); 
    background: rgba(220, 38, 38, 0.05);
}
.btn-danger:hover { 
    background: rgba(220, 38, 38, 0.1); 
    border-color: var(--danger);
}

.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 6px; }
.btn-block { width: 100%; margin-top: 12px; }
.btn-group { display: flex; gap: 12px; justify-content: center; margin-top: 20px; }

/* ==========================================
   UPLOAD ZONE
   ========================================== */
.drop-zone { 
    border: 2px dashed var(--border); 
    border-radius: var(--radius); 
    padding: 48px 20px; 
    text-align: center; 
    cursor: pointer; 
    transition: all 0.3s ease; 
    background: var(--bg-soft);
}
.drop-zone:hover { 
    border-color: var(--primary); 
    background: var(--primary-soft); 
}
.drop-zone.dragover { 
    border-color: var(--primary); 
    background: var(--primary-soft); 
    transform: scale(1.01);
}
.drop-zone-content svg { color: var(--primary); margin-bottom: 12px; }
.drop-zone-content h3 { font-size: 20px; margin-bottom: 8px; font-weight: 700; }
.drop-zone-content p { color: var(--text-muted); font-size: 14px; margin-bottom: 8px; }

/* ==========================================
   EDITOR LAYOUT
   ========================================== */
.editor-layout { display: grid; grid-template-columns: 1fr 320px; gap: 24px; }
.editor-stage { 
    background: var(--bg-soft); 
    border-radius: 8px; 
    overflow: hidden; 
    min-height: 300px; 
    border: 1px solid var(--border);
}
.editor-stage img { max-width: 100%; display: block; }
.editor-controls { display: flex; flex-direction: column; gap: 16px; }

/* Tabs */
.tabs { display: flex; border-bottom: 2px solid var(--border); margin-bottom: 16px; overflow-x: auto; }
.tab-btn { 
    padding: 10px 16px; border: none; background: none; cursor: pointer; 
    color: var(--text-muted); font-weight: 600; white-space: nowrap; 
    border-bottom: 2px solid transparent; margin-bottom: -2px; 
    transition: color 0.2s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Inputs & Controls */
.control-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
label { display: block; font-size: 13px; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; }
input[type="range"] { width: 100%; accent-color: var(--primary); height: 4px; }
input[type="number"], select { 
    width: 100%; padding: 10px 12px; border-radius: 8px; 
    border: 1px solid var(--border); background: var(--bg-elev); color: var(--text); 
    font-family: inherit; font-size: 14px; transition: border-color 0.2s;
}
input[type="number"]:focus, select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }

/* ==========================================
   BACKGROUND SWATCHES
   ========================================== */
.bg-swatches { display: flex; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.swatch, .swatch-color { 
    width: 40px; height: 40px; border-radius: 8px; 
    border: 2px solid transparent; cursor: pointer; padding: 0; 
    transition: transform 0.2s;
}
.swatch:hover { transform: scale(1.1); }
.swatch.active { 
    border-color: var(--primary); 
    box-shadow: 0 0 0 2px var(--bg-elev), 0 0 0 4px var(--primary); 
}
.swatch-color { border: 1px solid var(--border); }

/* ==========================================
   SETTINGS & PREVIEW
   ========================================== */
.settings-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.settings-left select { width: 100%; margin-bottom: 12px; }
.row { display: flex; gap: 12px; margin-bottom: 12px; }
.info-note { 
    font-size: 12px; color: var(--text-muted); 
    background: var(--bg-soft); padding: 12px; border-radius: 8px; 
    margin-top: 12px; border-left: 4px solid var(--primary); 
}

.quality-check { margin-top: 24px; background: var(--bg-soft); padding: 16px; border-radius: 8px; border: 1px solid var(--border); }
.quality-check h4 { font-size: 15px; margin-bottom: 12px; }
.quality-check ul { list-style: none; }
.quality-check li { padding: 6px 0; font-size: 13px; display: flex; align-items: center; gap: 8px; }
.qc-good::before { content: "✓"; color: var(--success); font-weight: bold; }
.qc-warn::before { content: "!"; color: var(--warning); font-weight: bold; }
.qc-bad::before { content: "✕"; color: var(--danger); font-weight: bold; }

.settings-right { display: flex; flex-direction: column; }
.preview-area { 
    background: var(--bg-soft); border: 1px dashed var(--border); 
    border-radius: 8px; min-height: 200px; 
    display: flex; align-items: center; justify-content: center; 
    color: var(--text-muted); font-size: 14px; margin-bottom: 12px; overflow: hidden; 
}
.preview-area img { max-width: 100%; max-height: 300px; object-fit: contain; }
.download-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }

/* ==========================================
   SHEET MAKER
   ========================================== */
.sheet-layout { display: grid; grid-template-columns: 280px 1fr; gap: 24px; }
.sheet-controls { display: flex; flex-direction: column; gap: 12px; }
.sheet-controls label, .sheet-controls select, .sheet-controls input { width: 100%; }
.sheet-preview-wrap { 
    background: var(--bg-soft); padding: 16px; border-radius: 8px; 
    text-align: center; overflow: auto; border: 1px solid var(--border); 
}
#sheetCanvas { max-width: 100%; height: auto; background: #fff; box-shadow: var(--shadow-lg); }

/* ==========================================
   MODAL & CAMERA
   ========================================== */
.modal { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.8); z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 20px; backdrop-filter: blur(4px); }
.modal-content { background: var(--bg-elev); border-radius: var(--radius); width: 100%; max-width: 600px; box-shadow: var(--shadow-lg); }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 18px; font-weight: 700; }
.modal-body { padding: 20px; }
#cameraVideo, #cameraCanvas { width: 100%; border-radius: 8px; background: #000; aspect-ratio: 4/3; }
.camera-controls { display: flex; justify-content: center; align-items: center; gap: 24px; margin-top: 20px; }
.capture-btn { 
    width: 64px; height: 64px; border-radius: 50%; 
    background: #fff; border: 4px solid var(--primary); cursor: pointer; 
    box-shadow: var(--shadow); transition: transform 0.1s;
}
.capture-btn:active { transform: scale(0.95); }

/* ==========================================
   LOADERS & TOASTS
   ========================================== */
.loader-overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.loader-box { background: var(--bg-elev); padding: 32px; border-radius: 12px; text-align: center; box-shadow: var(--shadow-lg); }
.spinner { width: 40px; height: 40px; border: 4px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 16px; }
@keyframes spin { to { transform: rotate(360deg); } }
#loaderText { font-weight: 500; color: var(--text); }

.toast-container { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 3000; display: flex; flex-direction: column; gap: 10px; width: 90%; max-width: 400px; }
.toast { 
    padding: 12px 20px; border-radius: 8px; color: #fff; font-weight: 500; 
    box-shadow: var(--shadow-lg); animation: slideUp 0.3s ease; 
    display: flex; align-items: center; justify-content: center;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    .editor-layout, .settings-layout, .sheet-layout { grid-template-columns: 1fr; }
    .control-grid, .download-grid { grid-template-columns: 1fr 1fr; }
    .tool-header h1 { font-size: 24px; }
    .card { padding: 16px; }
    .btn-group { flex-direction: column; }
    .btn-group .btn { width: 100%; }
}

/* ==========================================
   PRINT CSS (Hides everything except the sheet)
   ========================================== */
@media print {
    body * { visibility: hidden; }
    #sheetSection, #sheetSection * { visibility: visible; }
    #sheetSection { position: absolute; left: 0; top: 0; width: 100%; border: none; box-shadow: none; padding: 0; margin: 0; }
    .sheet-controls, .t24-header, .t24-footer, .breadcrumb, .tool-header, .seo-content, .upload-section, .editor-section, .settings-section { display: none !important; }
    .sheet-preview-wrap { background: none; padding: 0; border: none; }
    @page { size: auto; margin: 10mm; }
}