/* ==========================================================================
   3D PDF KATALOG & NUMUNE SİSTEMİ - MODERN PREMIUM STİL DOSYASI
   Renk Paleti:
   - Primary Accent: #E87A00 (Turuncu)
   - Dark Slate Base: #2D3037
   - Muted Silver: #B8B8B8
   - Secondary Dark: #3D3D3D
   - Deep Black: #1a1c20
   ========================================================================== */

:root {
    --color-primary: #E87A00;
    --color-primary-hover: #ff8c0a;
    --color-primary-glow: rgba(232, 122, 0, 0.35);
    
    --color-bg-base: #2D3037;
    --color-bg-deep: #1e2025;
    --color-bg-darker: #16181b;
    --color-bg-card: #343840;
    --color-bg-secondary: #3D3D3D;
    
    --color-text-main: #FFFFFF;
    --color-text-muted: #B8B8B8;
    --color-text-dim: #7f8591;
    
    --color-border: #474c56;
    --color-border-light: rgba(255, 255, 255, 0.08);
    
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --header-height: 64px;
    --sidebar-width: 320px;
    --transition-speed: 0.25s;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.35);
    --shadow-book: 0 20px 50px rgba(0, 0, 0, 0.65), 0 0 100px rgba(0, 0, 0, 0.35);
}

/* Reset & Global Box Sizing */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-bg-deep);
    color: var(--color-text-main);
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.5;
    user-select: none;
    -webkit-user-select: none;
}

/* App Main Layout */
.app-layout {
    display: flex;
    flex-direction: column;
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at center top, #343840 0%, #1e2025 60%, #16181b 100%);
}

/* ==========================================================================
   TOP BAR (HEADER)
   ========================================================================== */
.top-bar {
    height: var(--header-height);
    background-color: rgba(45, 48, 55, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.top-bar-left, .top-bar-center, .top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.active-catalog-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(61, 61, 61, 0.6);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-light);
}

.category-tag {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-primary);
    background: rgba(232, 122, 0, 0.15);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.divider {
    color: var(--color-border);
    font-size: 12px;
}

.catalog-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-main);
    white-space: nowrap;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Quick Category Navigation Pills */
.quick-category-pills {
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(30, 32, 37, 0.7);
    padding: 4px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-light);
}

.cat-pill {
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-text-muted);
    font-family: var(--font-family);
    font-size: 12px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.cat-pill:hover {
    color: var(--color-text-main);
    background: rgba(255, 255, 255, 0.06);
}

.cat-pill.active {
    background: var(--color-primary);
    color: #FFFFFF;
    box-shadow: 0 2px 10px var(--color-primary-glow);
}

/* Buttons */
.btn-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 15px;
    transition: all var(--transition-speed) ease;
    outline: none;
}

.btn-icon:hover {
    background: var(--color-bg-card);
    color: var(--color-text-main);
    border-color: var(--color-border);
    transform: translateY(-1px);
}

.btn-icon.active {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: rgba(232, 122, 0, 0.12);
}

.header-btn {
    gap: 8px;
    padding: 0 14px;
    width: auto;
}

.header-btn .btn-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-main);
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-muted);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    transition: all var(--transition-speed);
}

.btn-icon-sm:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text-main);
}

/* ==========================================================================
   SIDEBAR (OFFCANVAS) & ACCORDION
   ========================================================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--color-bg-base);
    border-right: 1px solid var(--color-border);
    z-index: 200;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 10px 0 35px rgba(0, 0, 0, 0.4);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 150;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.sidebar-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border-light);
    background: var(--color-bg-deep);
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary), #c96500);
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 16px;
    box-shadow: 0 2px 10px var(--color-primary-glow);
}

.logo-text h2 {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.5px;
    color: #FFFFFF;
    line-height: 1.1;
}

.logo-text small {
    font-size: 11px;
    color: var(--color-primary);
    font-weight: 500;
}

/* Sidebar Search */
.sidebar-search {
    padding: 14px 16px;
    border-bottom: 1px solid var(--color-border-light);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0 12px;
    transition: border-color var(--transition-speed);
}

.search-box:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-primary-glow);
}

.search-box i {
    color: var(--color-text-muted);
    font-size: 14px;
}

.search-box input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: #FFFFFF;
    font-family: var(--font-family);
    font-size: 13px;
    padding: 10px 8px;
}

.search-box input::placeholder {
    color: var(--color-text-dim);
}

.clear-btn {
    background: transparent;
    border: none;
    color: var(--color-text-dim);
    cursor: pointer;
    padding: 4px;
    display: flex;
}

.clear-btn:hover {
    color: var(--color-text-main);
}

/* Sidebar Content & Accordion */
.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px 10px;
}

.sidebar-content::-webkit-scrollbar {
    width: 5px;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.accordion-category {
    margin-bottom: 8px;
    background: rgba(30, 32, 37, 0.4);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-speed);
}

.accordion-category.active-parent {
    border-color: rgba(232, 122, 0, 0.4);
}

.category-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: var(--color-bg-secondary);
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.category-header:hover {
    background: var(--color-bg-card);
}

.cat-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.cat-header-left i.cat-icon {
    color: var(--color-primary);
    font-size: 14px;
    width: 18px;
    text-align: center;
}

.cat-header-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-main);
}

.cat-count-badge {
    font-size: 11px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-text-muted);
    padding: 2px 7px;
    border-radius: var(--radius-full);
}

.accordion-chevron {
    color: var(--color-text-dim);
    font-size: 12px;
    transition: transform 0.25s ease;
}

.accordion-category.open .accordion-chevron {
    transform: rotate(180deg);
}

.category-body {
    display: none;
    padding: 6px 8px;
}

.accordion-category.open .category-body {
    display: block;
}

/* Product & Master Catalog Items in Sidebar */
.item-btn {
    width: 100%;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 12px;
    margin: 2px 0;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: transparent;
    color: var(--color-text-muted);
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
}

.item-btn:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text-main);
}

.item-btn.active {
    background: rgba(232, 122, 0, 0.15);
    color: var(--color-primary);
    border-color: rgba(232, 122, 0, 0.4);
    font-weight: 700;
}

.item-btn.master-item {
    font-weight: 700;
    color: #FFFFFF;
    background: rgba(232, 122, 0, 0.08);
    border: 1px dashed rgba(232, 122, 0, 0.3);
    margin-bottom: 6px;
}

.item-btn.master-item:hover {
    background: rgba(232, 122, 0, 0.2);
    border-style: solid;
}

.item-btn-name {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.item-btn-name i {
    font-size: 11px;
    opacity: 0.7;
}

.item-btn.active .item-btn-name i {
    color: var(--color-primary);
    opacity: 1;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 12px 16px;
    background: var(--color-bg-deep);
    border-top: 1px solid var(--color-border-light);
}

.catalog-stats {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--color-text-dim);
}

/* ==========================================================================
   MAIN VIEWER WORKSPACE & FLIPBOOK
   ========================================================================== */
.viewer-container {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 10px;
    width: 100%;
    height: calc(100vh - var(--header-height));
}

/* Flipbook Stage & Zoom Container */
.flipbook-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: default;
}

.flipbook-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    transform-origin: center center;
    transition: transform 0.2s cubic-bezier(0.1, 0.9, 0.2, 1);
    will-change: transform;
}

.flipbook {
    box-shadow: var(--shadow-book);
    border-radius: 4px;
    background: #25282f;
    position: relative;
}

/* Book Page Styling for StPageFlip */
.st-page {
    background-color: #FFFFFF;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.st-page canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* Spine Shadow (Kitap Ortası 3D Derinlik Gölgesi) */
.st-page.--left::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(to left, rgba(0,0,0,0.25), transparent);
    pointer-events: none;
    z-index: 10;
}

.st-page.--right::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(to right, rgba(0,0,0,0.25), transparent);
    pointer-events: none;
    z-index: 10;
}

/* Side Navigation Arrows */
.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 64px;
    background: rgba(45, 48, 55, 0.85);
    backdrop-filter: blur(8px);
    border: 1px solid var(--color-border-light);
    color: var(--color-text-main);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 40;
    transition: all var(--transition-speed) ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.prev-arrow {
    left: 16px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.next-arrow {
    right: 16px;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.nav-arrow:hover {
    background: var(--color-primary);
    color: #FFFFFF;
    border-color: var(--color-primary);
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

.nav-arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.nav-arrow:disabled {
    opacity: 0.25;
    cursor: not-allowed;
    pointer-events: none;
}

/* ==========================================================================
   BOTTOM FLOATING CONTROL BAR
   ========================================================================== */
.bottom-control-bar {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(45, 48, 55, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    padding: 6px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 50;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    transition: opacity var(--transition-speed), transform var(--transition-speed);
}

.control-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.ctrl-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    outline: none;
}

.ctrl-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #FFFFFF;
}

.ctrl-btn.active {
    background: var(--color-primary);
    color: #FFFFFF;
    box-shadow: 0 2px 8px var(--color-primary-glow);
}

.ctrl-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.control-divider {
    width: 1px;
    height: 20px;
    background: var(--color-border);
    margin: 0 4px;
}

.control-page-counter {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--color-bg-deep);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border-light);
}

.control-page-counter input {
    width: 38px;
    background: transparent;
    border: none;
    outline: none;
    color: #FFFFFF;
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 700;
    text-align: center;
}

.page-total {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-muted);
}

.btn-jump {
    background: var(--color-primary);
    color: #FFFFFF;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    cursor: pointer;
    transition: background var(--transition-speed);
}

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

.zoom-text {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-muted);
    min-width: 42px;
    text-align: center;
}

/* ==========================================================================
   PAGE THUMBNAIL DRAWER
   ========================================================================== */
.thumbnail-drawer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 170px;
    background: rgba(30, 32, 37, 0.96);
    backdrop-filter: blur(16px);
    border-top: 1px solid var(--color-border);
    z-index: 60;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.thumbnail-drawer.open {
    transform: translateY(0);
}

.thumb-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-muted);
}

.thumb-scroller {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 20px;
    overflow-x: auto;
    overflow-y: hidden;
}

.thumb-scroller::-webkit-scrollbar {
    height: 6px;
}

.thumb-scroller::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

.thumb-item {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: transform var(--transition-speed);
}

.thumb-item:hover {
    transform: translateY(-4px);
}

.thumb-preview-box {
    width: 75px;
    height: 100px;
    background: #FFFFFF;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    border: 2px solid transparent;
    transition: border-color var(--transition-speed);
}

.thumb-item.active .thumb-preview-box {
    border-color: var(--color-primary);
    box-shadow: 0 0 12px var(--color-primary-glow);
}

.thumb-preview-box canvas, .thumb-preview-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.thumb-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-muted);
}

.thumb-item.active .thumb-label {
    color: var(--color-primary);
}

/* ==========================================================================
   LOADING & ERROR OVERLAYS
   ========================================================================== */
.loading-overlay, .error-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(22, 24, 27, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 80;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
}

.loading-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.loader-box {
    background: var(--color-bg-base);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 30px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    min-width: 280px;
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(232, 122, 0, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loader-text {
    font-size: 14px;
    font-weight: 600;
    color: #FFFFFF;
}

.progress-bar-wrap {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-primary), #ff9d2e);
    border-radius: 3px;
    transition: width 0.15s ease;
}

.progress-percentage {
    font-size: 12px;
    font-weight: 700;
    color: var(--color-primary);
}

/* Error Card */
.error-card {
    background: var(--color-bg-base);
    border: 1px solid rgba(255, 77, 79, 0.4);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    max-width: 360px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.error-card i {
    font-size: 40px;
    color: #ff4d4f;
    margin-bottom: 14px;
}

.error-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #FFFFFF;
}

.error-card p {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 18px;
}

.btn-action {
    background: var(--color-primary);
    color: #FFFFFF;
    border: none;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition-speed);
}

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

/* ==========================================================================
   RESPONSIVE DESIGN ADAPTATIONS
   ========================================================================== */
@media (max-width: 1024px) {
    .quick-category-pills {
        display: none;
    }
}

@media (max-width: 768px) {
    .top-bar {
        padding: 0 10px;
    }
    
    .catalog-title {
        max-width: 140px;
    }

    .header-btn .btn-label {
        display: none;
    }
    
    .header-btn {
        width: 38px;
        padding: 0;
    }

    .bottom-control-bar {
        bottom: 10px;
        padding: 4px 8px;
        max-width: calc(100% - 20px);
        overflow-x: auto;
    }

    .zoom-group {
        display: none;
    }

    .nav-arrow {
        width: 36px;
        height: 50px;
        font-size: 16px;
    }

    .prev-arrow { left: 4px; }
    .next-arrow { right: 4px; }
}

/* ==========================================================================
   SAYFA PLACEHOLDER & LOADER
   ========================================================================== */
.page {
    position: relative;
    overflow: hidden;
}

.page-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    height: 100%;
    background: #f5f5f5;
    color: #999;
    font-size: 13px;
    font-family: var(--font-family);
}

.page-loader-spin {
    width: 28px;
    height: 28px;
    border: 3px solid #ddd;
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Hata mesajı için white-space */
.error-card p {
    white-space: pre-line;
    text-align: left;
    font-size: 13px;
    line-height: 1.6;
}