:root {
    /* Premium Light Theme */
    --bg: #f8fafc; /* Soft slate white */
    --card-bg: #ffffff; /* Pure white for elements */
    --text: #0f172a; /* Slate black */
    --text-muted: #64748b;
    --primary: #e50914; /* Brand Red */
    --primary-hover: #b80710;
    --border: #e2e8f0; /* Ultra-soft borders */
    --font-main: 'Outfit', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.03), 0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] {
    /* Premium Dark Theme */
    --bg: #0b0f19; /* Deep indigo-charcoal */
    --card-bg: #151d30; /* Medium indigo-charcoal */
    --text: #f1f5f9; /* Warm soft gray */
    --text-muted: #94a3b8;
    --border: #1e293b; /* Deep slate borders */
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.15), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.25), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
}

/* Hide Scrollbars Globally */
::-webkit-scrollbar { display: none; }
* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease, transform 0.3s cubic-bezier(0.4, 0, 0.2, 1); 
    -ms-overflow-style: none; 
    scrollbar-width: none; 
}

body { 
    background-color: var(--bg); 
    color: var(--text); 
    font-family: var(--font-main); 
    height: 100vh; 
    width: 100vw; 
    overflow: hidden; 
    display: flex; 
    flex-direction: column; 
}

/* Navbar */
.navbar { 
    height: 65px; 
    border-bottom: 1px solid var(--border); 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 0 2rem; 
    background-color: var(--card-bg); 
    position: fixed; 
    top: 0; 
    width: 100%; 
    z-index: 100; 
    box-shadow: var(--shadow); 
}
.navbar .logo { 
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem; 
    font-weight: 800; 
    letter-spacing: -0.5px;
    flex: 1; 
}
.logo-badge {
    background: linear-gradient(135deg, #e50914, #ff4081);
    color: #fff;
    padding: 4px 12px;
    border-radius: 6px;
    font-weight: 900;
    font-size: 1.4rem;
    letter-spacing: 1px;
    box-shadow: 0 2px 8px rgba(229, 9, 20, 0.4);
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}
.logo-title {
    font-size: 1.1rem;
    font-weight: 600;
    opacity: 0.9;
    white-space: nowrap;
}
.navbar .sys { 
    color: var(--primary); 
    font-weight: 900; 
}
.nav-links { 
    display: flex; 
    gap: 0.25rem; 
    align-items: center; 
    justify-content: center; 
    flex: 2; 
}
.nav-item { 
    padding: 0.5rem 1rem; 
    border: none; 
    font-size: 0.95rem; 
    font-weight: 600; 
    border-radius: 8px; 
    background: transparent; 
    color: var(--text-muted); 
    cursor: pointer;
}
.nav-item:hover { 
    background-color: rgba(229, 9, 20, 0.06); 
    color: var(--primary); 
}
.nav-item.active { 
    background-color: var(--primary); 
    color: #ffffff; 
    box-shadow: 0 4px 12px rgba(229, 9, 20, 0.2);
}
.nav-actions { 
    display: flex; 
    gap: 0.75rem; 
    align-items: center; 
    justify-content: flex-end; 
    flex: 1; 
}
.mobile-only { display: none; }

/* Buttons & Controls */
button { 
    cursor: pointer; 
    font-family: inherit; 
    font-weight: 700; 
    text-transform: uppercase; 
    border: 1px solid var(--border); 
    background: var(--card-bg); 
    color: var(--text); 
    padding: 0.6rem 1.2rem; 
    border-radius: 8px; 
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}
button:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
button:active { transform: translateY(0); }
.btn-outline:hover { background-color: var(--text); color: var(--bg); border-color: var(--text); }
.btn-primary { background-color: var(--primary); color: #ffffff; border-color: var(--primary); }
.btn-primary:hover { background-color: var(--primary-hover); border-color: var(--primary-hover); color: #ffffff; box-shadow: 0 4px 12px rgba(229, 9, 20, 0.2); }

/* Round Icon Buttons (Toggles) */
.btn-icon-round {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-size: 0.85rem;
    font-weight: 800;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    cursor: pointer;
    overflow: hidden;
}
.btn-icon-round:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: scale(1.08) translateY(-1px);
    box-shadow: var(--shadow);
}
.btn-icon-round svg.theme-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s ease;
}
.btn-icon-round:hover svg.theme-icon {
    transform: rotate(45deg) scale(1.1);
}

/* Layout Container */
.layout { display: flex; margin-top: 65px; height: calc(100vh - 65px); overflow: hidden; width: 100%; }

/* Content Area */
.content { flex: 1; padding: 2.5rem; overflow-y: auto; height: 100%; background-color: var(--bg); }
.view { display: none; opacity: 0; transition: opacity 0.3s ease; }
.view.active { display: block; opacity: 1; }
h2, h3 { font-weight: 800; letter-spacing: -0.5px; margin-bottom: 1.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; color: var(--text-muted); }
.section-title { margin-top: 2.5rem; }
.hidden { display: none !important; opacity: 0; }

input, select { 
    padding: 0.75rem 1rem; 
    border: 1px solid var(--border); 
    background: var(--card-bg); 
    color: var(--text); 
    outline: none; 
    border-radius: 8px; 
    font-family: inherit; 
    font-weight: 500;
}
input:focus, select:focus { 
    border-color: var(--primary); 
    box-shadow: 0 0 0 3px rgba(229, 9, 20, 0.12); 
}

/* Dashboard Component Grid */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.25rem; width: 100%; }
.stat-card { 
    background-color: var(--card-bg);
    border: 1px solid var(--border); 
    padding: 1.75rem; 
    text-align: center; 
    border-radius: 16px; 
    box-shadow: var(--shadow); 
}
.stat-card:hover { 
    transform: translateY(-5px); 
    box-shadow: var(--shadow-lg); 
    border-color: var(--primary);
}
.stat-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.stat-card p { font-size: 2.75rem; font-weight: 900; color: var(--primary); letter-spacing: -1px; }

/* Seating Legend & Map */
.seating-legend { display: flex; gap: 1.25rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.legend-item { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; font-weight: 600; color: var(--text-muted); }
.box { width: 18px; height: 18px; border: 1px solid var(--border); border-radius: 5px; }
.box.empty { background-color: var(--card-bg); }
.box.reserved { background-color: var(--primary); border-color: var(--primary); }
.box.checked { background-color: #10b981; border-color: #10b981; }

.seating-grid { 
    display: grid; 
    grid-template-columns: repeat(19, 1fr); 
    gap: 0.6rem; 
    width: 100%; 
    max-width: 1200px; 
    margin: 0 auto; 
    padding-bottom: 6rem; /* Extra padding to lift seating layout from the bottom */
}

/* Create the middle aisle between the two 9-column sections */
.seat:nth-child(18n + 10) { grid-column-start: 11; }

.seat {
    aspect-ratio: 1; 
    position: relative; 
    display: flex; 
    justify-content: center; 
    align-items: center;
    cursor: pointer; 
    border-radius: 6px; 
    z-index: 1;
    background: transparent !important; 
    border: none !important; 
    overflow: visible;
}

.seat-svg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    display: block;
}
.seat-label-text {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    z-index: 2; font-weight: 800; font-size: 0.75rem; letter-spacing: 0.5px;
    transition: color 0.3s ease; pointer-events: none;
}

/* SEATING THEMES - Right Side (Red/Primary Theme) */
.seat:not(.vip)[data-side="right"].empty .seat-back, 
.seat:not(.vip)[data-side="right"].empty .seat-base { fill: transparent; stroke: var(--primary); stroke-width: 4; }
.seat:not(.vip)[data-side="right"].empty .seat-label-text { color: var(--primary); }

.seat:not(.vip)[data-side="right"].reserved .seat-back, 
.seat:not(.vip)[data-side="right"].reserved .seat-base { fill: var(--primary); stroke: var(--primary); stroke-width: 4; }
.seat:not(.vip)[data-side="right"].reserved .seat-label-text { color: #fff; }

.seat:not(.vip)[data-side="right"].checked .seat-back, 
.seat:not(.vip)[data-side="right"].checked .seat-base { fill: #10b981; stroke: #10b981; stroke-width: 4; }
.seat:not(.vip)[data-side="right"].checked .seat-label-text { color: #fff; }

/* SEATING THEMES - Left Side (Slate Border Theme) */
.seat:not(.vip)[data-side="left"].empty .seat-back, 
.seat:not(.vip)[data-side="left"].empty .seat-base { fill: transparent; stroke: var(--border); stroke-width: 4; }
.seat:not(.vip)[data-side="left"].empty .seat-label-text { color: var(--text-muted); }

.seat:not(.vip)[data-side="left"].reserved .seat-back, 
.seat:not(.vip)[data-side="left"].reserved .seat-base { fill: var(--text); stroke: var(--text); stroke-width: 4; }
.seat:not(.vip)[data-side="left"].reserved .seat-label-text { color: var(--card-bg); }

.seat:not(.vip)[data-side="left"].checked .seat-back, 
.seat:not(.vip)[data-side="left"].checked .seat-base { fill: #10b981; stroke: #10b981; stroke-width: 4; }
.seat:not(.vip)[data-side="left"].checked .seat-label-text { color: #fff; }

/* VIP ROYAL SEATS */
.seat.vip.empty .seat-back, .seat.vip.empty .seat-base, .seat.vip.empty .arm-rest { fill: transparent; stroke: #D4AF37; stroke-width: 4; }
.seat.vip.empty .seat-label-text { color: #D4AF37; }

.seat.vip.reserved .seat-back, .seat.vip.reserved .seat-base, .seat.vip.reserved .arm-rest { fill: #D4AF37; stroke: #B8860B; stroke-width: 4; }
.seat.vip.reserved .seat-label-text { color: #000; text-shadow: 0 0 2px rgba(255,255,255,0.5); }
.seat.vip.reserved { filter: drop-shadow(0px 0px 6px rgba(212, 175, 55, 0.4)); z-index: 5; }

.seat.vip.checked .seat-back, .seat.vip.checked .seat-base, .seat.vip.checked .arm-rest { fill: #10b981; stroke: #D4AF37; stroke-width: 4; }
.seat.vip.checked .seat-label-text { color: #fff; text-shadow: 0 0 2px rgba(0,0,0,0.6); }
.seat.vip.checked { filter: drop-shadow(0px 0px 6px rgba(16, 185, 129, 0.4)); z-index: 5; }

.seat:hover { transform: scale(1.15); filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15)); z-index: 10; }

/* Tooltip for seats */
.seat::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 115%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text);
    color: var(--card-bg);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    z-index: 20;
    box-shadow: var(--shadow-lg);
}
.seat:hover::before {
    opacity: 1;
    visibility: visible;
    transition-delay: 0.2s;
}

/* Scanner Component */
.scanner-container { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; margin-top: 2rem; }
.qr-reader-box {
    width: 90%;
    max-width: 320px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    box-shadow: var(--shadow);
}
.scan-instructions {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-muted);
}
#reader button { 
    cursor: pointer; 
    font-family: inherit; 
    font-weight: 700; 
    border: 1px solid var(--border); 
    background: var(--card-bg); 
    color: var(--text); 
    padding: 0.5rem 1rem; 
    border-radius: 8px; 
    margin: 5px; 
}
#reader button:hover { background-color: var(--text); color: var(--card-bg); border-color: var(--text); }
#reader select { margin: 10px 0; padding: 0.5rem; border-radius: 8px; border-color: var(--border); background: var(--card-bg); color: var(--text); }
#reader a { display: none; }
[data-theme="dark"] #reader img { filter: invert(1); }

.result-card {
    border: 1px solid var(--border);
    background: var(--card-bg);
    padding: 1.5rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
    border-radius: 12px;
    box-shadow: var(--shadow);
}
.result-card.success {
    border-color: #10b981;
    color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}
.result-card.error {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(229, 9, 20, 0.05);
}

/* Manual Entry View */
.manual-container { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; margin-top: 2rem; }
.manual-form { width: 100%; max-width: 400px; display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; font-weight: 700; color: var(--text-muted); }

/* Database View */
.add-attendee-container { margin-bottom: 1.5rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.manage-form { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; width: 100%; }
.manage-form input, .manage-form select { flex: 1; min-width: 150px; }
.btn-icon { background: transparent; border: none; color: var(--text); display: flex; align-items: center; justify-content: center; padding: 0.5rem; cursor: pointer; }
.btn-icon:hover { transform: scale(1.15); color: var(--primary); }
.delete-btn { border-color: var(--primary); color: var(--primary); padding: 0.35rem 0.75rem; font-size: 0.8rem; border-radius: 6px; }
.delete-btn:hover { background-color: var(--primary); color: #fff; }
.edit-btn { border-color: #3b82f6; color: #3b82f6; padding: 0.35rem 0.75rem; font-size: 0.8rem; border-radius: 6px; margin-inline-end: 0.5rem; }
.edit-btn:hover { background-color: #3b82f6; color: #fff; border-color: #3b82f6; }
.qr-btn { border-color: var(--text-muted); color: var(--text-muted); padding: 0.35rem 0.75rem; font-size: 0.8rem; border-radius: 6px; margin-inline-end: 0.5rem; }
.qr-btn:hover { background-color: var(--text-muted); color: var(--card-bg); }

/* Modals */
.qr-modal { position: fixed; inset: 0; background: rgba(11, 15, 25, 0.85); z-index: 1000; display: flex; justify-content: center; align-items: center; opacity: 0; pointer-events: none; backdrop-filter: blur(4px); }
.qr-modal.active { opacity: 1; pointer-events: auto; }
.qr-modal-content { 
    background: var(--card-bg); 
    color: var(--text); 
    padding: 2.5rem; 
    border-radius: 20px; 
    text-align: center; 
    position: relative; 
    border: 1px solid var(--border); 
    min-width: 320px; 
    box-shadow: var(--shadow-lg); 
}
.close-modal { position: absolute; top: 12px; right: 18px; font-size: 1.75rem; cursor: pointer; color: var(--text-muted); line-height: 1; }
.close-modal:hover { color: var(--primary); }
#db-qr-canvas { margin: 1.5rem auto; display: block; border: 10px solid #fff; border-radius: 8px; background: #fff; box-shadow: var(--shadow); }

/* Badges */
.badge { display: inline-block; padding: 0.4rem 0.8rem; border-radius: 30px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; text-align: center; min-width: 100px; border: 1px solid transparent; }
.badge.empty { background: transparent; color: var(--text-muted); border-color: var(--border); }
.badge.reserved { background: rgba(245, 158, 11, 0.1); color: #f59e0b; border-color: rgba(245, 158, 11, 0.2); }
.badge.checked { background: rgba(16, 185, 129, 0.1); color: #10b981; border-color: rgba(16, 185, 129, 0.2); }

/* Roles Badges */
.role-badge { display: inline-block; padding: 0.35rem 0.75rem; border-radius: 8px; font-size: 0.75rem; font-weight: 800; text-transform: uppercase; margin-top: 4px; border: 1px solid transparent; }
.role-guest { background: rgba(100, 116, 139, 0.08); color: var(--text-muted); border-color: rgba(100, 116, 139, 0.15); }
.role-vip { background: rgba(212, 175, 55, 0.1); color: #cfa11d; border-color: rgba(212, 175, 55, 0.3); }
.role-speaker { background: rgba(168, 85, 247, 0.1); color: #a855f7; border-color: rgba(168, 85, 247, 0.2); }
.role-team { background: rgba(59, 130, 246, 0.1); color: #3b82f6; border-color: rgba(59, 130, 246, 0.2); }
.role-partner { background: rgba(20, 184, 166, 0.1); color: #14b8a6; border-color: rgba(20, 184, 166, 0.2); }
.role-core { background: rgba(229, 9, 20, 0.1); color: var(--primary); border-color: rgba(229, 9, 20, 0.2); }

/* Database Table Layout */
.table-container {
    overflow-x: auto;
    overflow-y: auto;
    max-height: calc(100vh - 250px);
    border: 1px solid var(--border);
    border-radius: 12px;
    width: 100%;
    box-shadow: var(--shadow);
    background-color: var(--card-bg);
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 1.1rem 1.25rem; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.data-table th {
    background-color: var(--bg);
    color: var(--text);
    font-weight: 700;
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom: 1px solid var(--border);
}
.data-table tbody tr:nth-child(even) { background-color: rgba(100, 116, 139, 0.02); }
.data-table tbody tr:hover { background-color: rgba(229, 9, 20, 0.04); }

[dir="rtl"] .data-table th, [dir="rtl"] .data-table td { text-align: right; }

/* Custom Toasts styling */
.toast-container { position: fixed; bottom: 25px; right: 25px; display: flex; flex-direction: column; gap: 12px; z-index: 9999; }
.toast { 
    min-width: 280px; 
    padding: 1.1rem 1.5rem; 
    border-radius: 12px; 
    font-weight: 700; 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    box-shadow: var(--shadow-lg); 
    transform: translateX(120%); 
    opacity: 0; 
    background: var(--card-bg); 
    color: var(--text); 
    border-left: 5px solid var(--border); 
}
.toast.show { transform: translateX(0); opacity: 1; }
.toast.error { border-left-color: var(--primary); }
.toast.success { border-left-color: #10b981; }
.toast.warning { border-left-color: #f59e0b; }
.toast-close { cursor: pointer; font-size: 1.5rem; margin-left: 1rem; color: var(--text-muted); line-height: 1; }
.toast-close:hover { color: var(--text); }

/* Admin Modal Items */
.admin-list-item { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 1rem 1.25rem; 
    border: 1px solid var(--border); 
    border-radius: 10px; 
    background: rgba(100,116,139,0.02); 
    gap: 1rem; 
    flex-wrap: wrap; 
}
.admin-list-info { flex: 1; display: flex; gap: 1.25rem; flex-wrap: wrap; align-items: center; }
.admin-list-info span { font-size: 0.9rem; font-weight: 700; }
.admin-list-info .email { color: var(--text-muted); font-weight: 500; }

/* Toggle Switch */
.switch { position: relative; display: inline-block; width: 48px; height: 26px; flex-shrink: 0; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--border); transition: .4s; border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 4px; bottom: 4px; background-color: var(--card-bg); transition: .4s; border-radius: 50%; box-shadow: var(--shadow); }
input:checked + .slider { background-color: #10b981; }
input:checked + .slider:before { transform: translateX(22px); }

/* RTL for Toasts */
[dir="rtl"] .toast-container { right: auto; left: 25px; }
[dir="rtl"] .toast { transform: translateX(-120%); border-left: none; border-right: 5px solid var(--border); }
[dir="rtl"] .toast.show { transform: translateX(0); }
[dir="rtl"] .toast.error { border-right-color: var(--primary); }
[dir="rtl"] .toast.success { border-right-color: #10b981; }
[dir="rtl"] .toast.warning { border-right-color: #f59e0b; }
[dir="rtl"] .toast-close { margin-left: 0; margin-right: 1rem; }

/* Print QR Cards */
.print-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; justify-content: center; margin-top: 1rem; }
.print-card { border: 2px dashed var(--border); padding: 1.75rem; text-align: center; border-radius: 12px; background: var(--card-bg); box-shadow: var(--shadow); }
.print-card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; color: var(--text-muted); }
.print-card p { font-size: 1rem; margin-bottom: 1rem; font-weight: 700; color: var(--text); }
.print-card canvas { margin: 0 auto; display: block; border: 5px solid #fff; border-radius: 6px; box-shadow: var(--shadow); }
.pagination-controls { display: flex; justify-content: center; gap: 0.5rem; margin-top: 2rem; flex-wrap: wrap; }
.page-btn { padding: 0.5rem 1.1rem; border: 1px solid var(--primary); background: var(--card-bg); color: var(--text); cursor: pointer; border-radius: 6px; font-weight: 700; }
.page-btn.active { background: var(--primary); color: #fff; }
.page-btn:hover { background: var(--primary); color: #fff; opacity: 0.9; }

@media print {
    body { height: auto; overflow: visible; background: #fff !important; color: #000 !important; }
    .navbar, .nav-actions, .pagination-controls, button, .layout, .add-attendee-container { display: none !important; }
    .layout { display: block; margin: 0; height: auto; overflow: visible; }
    .content { padding: 0; overflow: visible; height: auto; }
    #print-qrs { display: block !important; opacity: 1 !important; visibility: visible !important; }
    .view:not(#print-qrs) { display: none !important; }
    
    .print-grid { 
        display: grid; 
        grid-template-columns: repeat(2, 1fr); 
        gap: 20px; 
        margin: 0;
    }
    .print-card { 
        border: 2px solid #000; box-shadow: none; break-inside: avoid; page-break-inside: avoid; 
        height: 30vh; 
        display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 10px; 
    }
    .print-card h4 { font-size: 1.3rem; margin-bottom: 0.2rem; }
    .print-card canvas { border: none; box-shadow: none; max-width: 130px; max-height: 130px; margin-top: 10px; }
    @page { size: A4 portrait; margin: 10mm; }
}