/* CSS Custom Properties for HTL St. Pölten Design System */
:root {
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --bg-base: #0a0a0d;
    --bg-surface: rgba(29, 30, 34, 0.45);
    --bg-surface-hover: rgba(40, 41, 46, 0.6);
    --bg-surface-translucent: rgba(255, 255, 255, 0.03);
    --bg-surface-button: rgba(255, 255, 255, 0.05);
    --bg-surface-button-hover: rgba(255, 255, 255, 0.08);
    --bg-list: rgba(0, 0, 0, 0.15);
    --bg-card: rgba(255, 255, 255, 0.01);
    --bg-badge: rgba(255, 255, 255, 0.06);
    --bg-guide-header: rgba(255, 255, 255, 0.02);
    --bg-guide-content: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(156, 206, 43, 0.35);
    --border-input: rgba(255, 255, 255, 0.25);
    --scrollbar-thumb: rgba(255, 255, 255, 0.1);
    --scrollbar-thumb-hover: rgba(255, 255, 255, 0.2);
    --color-code-text: #e2f5b4;
    --heading-gradient: linear-gradient(135deg, #ffffff 30%, #d4f285 100%);
    
    --color-primary: #9cce2b;
    --color-primary-rgb: 156, 206, 43;
    --color-primary-glow: rgba(156, 206, 43, 0.15);
    --color-secondary: #595b60;
    --color-secondary-rgb: 89, 91, 96;
    --color-accent: #bdf04f;
    
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-error: #f43f5e;
    --color-error-bg: rgba(244, 63, 94, 0.1);
    --color-warning: #f59e0b;
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-inverse: #0a0a0d;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.24);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.35);
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light mode override colors */
:root[data-theme="light"] {
    --bg-base: #f4f5f7;
    --bg-surface: rgba(255, 255, 255, 0.7);
    --bg-surface-hover: rgba(255, 255, 255, 0.85);
    --bg-surface-translucent: rgba(0, 0, 0, 0.02);
    --bg-surface-button: rgba(0, 0, 0, 0.04);
    --bg-surface-button-hover: rgba(0, 0, 0, 0.08);
    --bg-list: rgba(0, 0, 0, 0.02);
    --bg-card: rgba(0, 0, 0, 0.01);
    --bg-badge: rgba(0, 0, 0, 0.04);
    --bg-guide-header: rgba(0, 0, 0, 0.02);
    --bg-guide-content: rgba(0, 0, 0, 0.01);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(130, 176, 28, 0.35);
    --border-input: rgba(0, 0, 0, 0.2);
    --scrollbar-thumb: rgba(0, 0, 0, 0.12);
    --scrollbar-thumb-hover: rgba(0, 0, 0, 0.22);
    --color-code-text: #5d7f14;
    --heading-gradient: linear-gradient(135deg, #1f2937 30%, #595b60 100%);
    
    --color-primary: #82b01c; /* slightly darker green for better contrast in light theme */
    --color-primary-rgb: 130, 176, 28;
    --color-primary-glow: rgba(130, 176, 28, 0.1);
    --color-secondary: #595b60;
    --color-secondary-rgb: 89, 91, 96;
    --color-accent: #658a14;
    
    --color-success-bg: rgba(16, 185, 129, 0.08);
    --color-error-bg: rgba(244, 63, 94, 0.06);
    
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --text-inverse: #ffffff;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.1);
}

/* Base Resets & Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    background-color: var(--bg-base);
    transition: background-color 0.3s ease;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Premium Backdrop Ambient Glows */
.ambient-glow-1 {
    position: absolute;
    top: 5%;
    left: 10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.08) 0%, rgba(0,0,0,0) 70%);
    border-radius: var(--radius-full);
    z-index: -2;
    pointer-events: none;
    filter: blur(50px);
    animation: pulse-slow 18s infinite alternate;
}

.ambient-glow-2 {
    position: absolute;
    bottom: 5%;
    right: 10%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, rgba(var(--color-secondary-rgb), 0.1) 0%, rgba(0,0,0,0) 75%);
    border-radius: var(--radius-full);
    z-index: -2;
    pointer-events: none;
    filter: blur(60px);
    animation: pulse-slow 14s infinite alternate-reverse;
}

@keyframes pulse-slow {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.1) translate(3%, 4%); }
}

/* Container Layout */
.app-container {
    width: 100%;
    max-width: 760px;
    padding: 40px 20px;
    z-index: 1;
}

/* Typography & Header styling */
header {
    text-align: center;
    margin-bottom: 35px;
}

.logo-area {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: var(--bg-surface-translucent);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    margin-bottom: 24px;
    transition: var(--transition-bounce);
    position: relative;
}

.logo-area::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: calc(var(--radius-md) + 4px);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    z-index: -1;
    opacity: 0.25;
    filter: blur(8px);
    transition: var(--transition-smooth);
}

.logo-area:hover {
    transform: scale(1.04);
    background: var(--bg-surface-button);
    border-color: rgba(var(--color-primary-rgb), 0.25);
    box-shadow: 0 8px 30px rgba(var(--color-primary-rgb), 0.12);
}

.logo-area:hover::after {
    opacity: 0.45;
    filter: blur(12px);
}

.logo-area svg {
    height: 42px;
    width: auto;
    display: block;
}

h1 {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: var(--heading-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    font-weight: 400;
    line-height: 1.5;
}

/* Glassmorphic Panel Styles */
.glass-panel {
    background: var(--bg-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
}

/* Dual Grid for File Inputs */
.upload-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

/* Upload Dropzone View */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-bounce);
    background: rgba(255, 255, 255, 0.01);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 250px;
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), 0.04);
    transform: scale(1.01);
    box-shadow: 0 0 25px var(--color-primary-glow);
}

.upload-icon {
    font-size: 42px;
    color: var(--color-primary);
    margin-bottom: 16px;
    transition: var(--transition-bounce);
    display: inline-block;
}

.upload-zone:hover .upload-icon {
    transform: translateY(-6px);
    color: var(--color-accent);
}

.upload-zone h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.upload-zone p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
}

.file-limit {
    margin-top: 12px;
    font-size: 0.725rem !important;
    opacity: 0.7;
}

/* Standard file input hidden */
.file-input {
    display: none;
}

/* File Selected State */
.file-info-active {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--color-success);
    animation: fadeIn 0.4s ease;
}

.file-info-active .upload-icon-success {
    font-size: 42px;
    color: var(--color-success);
    margin-bottom: 10px;
    animation: bounceIn 0.5s ease;
}

.file-info-active h4 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    word-break: break-all;
    padding: 0 10px;
}

.btn-remove-file {
    background: none;
    border: none;
    color: var(--color-error);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
    margin-top: 10px;
}

.btn-remove-file:hover {
    background: var(--color-error-bg);
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.1); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

/* Universal Circular Loading Spinner */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px 0;
    text-align: center;
}

.spinner-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}

.spinner {
    width: 100%;
    height: 100%;
    border: 4px solid rgba(255, 255, 255, 0.03);
    border-top: 4px solid var(--color-primary);
    border-right: 4px solid var(--color-secondary);
    border-radius: 50%;
    animation: spin 1.2s cubic-bezier(0.5, 0.1, 0.4, 0.9) infinite;
}

.spinner-glow {
    position: absolute;
    inset: -10px;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    filter: blur(10px);
    opacity: 0.8;
    animation: pulse-light 2s infinite alternate;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes pulse-light {
    0% { transform: scale(0.9); opacity: 0.5; }
    100% { transform: scale(1.15); opacity: 0.9; }
}

.loading-text {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
    background: var(--heading-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.loading-subtext {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Department Checklist View */
.file-info-header {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 25px;
    animation: fadeIn 0.4s ease;
}

.file-icon {
    font-size: 28px;
    color: #22c55e;
    margin-right: 16px;
}

.file-details {
    flex-grow: 1;
    overflow: hidden;
}

.file-name {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    font-size: 0.775rem;
    color: var(--text-muted);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
}

.selection-toggles {
    display: flex;
    gap: 12px;
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 0.825rem;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition-smooth);
}

.btn-text:hover {
    color: var(--color-accent);
    background: rgba(var(--color-primary-rgb), 0.08);
}

/* Checkbox Container */
.dept-list {
    max-height: 320px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.15);
    margin-bottom: 30px;
    padding: 8px;
}

/* Custom Scrollbar for list */
.dept-list::-webkit-scrollbar {
    width: 6px;
}

.dept-list::-webkit-scrollbar-track {
    background: transparent;
}

.dept-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
}

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

/* Item Row */
.dept-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-smooth);
    user-select: none;
    margin-bottom: 4px;
}

.dept-item:last-child {
    margin-bottom: 0;
}

.dept-item:hover {
    background: rgba(255, 255, 255, 0.03);
}

/* Custom Checkbox Design */
.checkbox-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border: 2px solid rgba(255, 255, 255, 0.25);
    border-radius: 6px;
    margin-right: 14px;
    transition: var(--transition-bounce);
    flex-shrink: 0;
    background: transparent;
}

.dept-item.selected .checkbox-container {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(var(--color-primary-rgb), 0.3);
    transform: scale(1.05);
}

.checkbox-container i {
    font-size: 11px;
    color: var(--text-inverse);
    opacity: 0;
    transform: scale(0.5);
    transition: var(--transition-bounce);
}

.dept-item.selected .checkbox-container i {
    opacity: 1;
    transform: scale(1);
}

.dept-name {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-main);
    transition: var(--transition-smooth);
}

.dept-item.selected .dept-name {
    color: #ffffff;
}

/* Styled Name Inputs */
.dept-name-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 5px 10px;
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.875rem;
    width: 100%;
    max-width: 250px;
    outline: none;
    transition: var(--transition-smooth);
}

.dept-name-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary-glow);
}

.dept-name-input.warning {
    background: rgba(245, 158, 11, 0.04);
    border-color: rgba(245, 158, 11, 0.35);
}

.dept-name-input.warning:focus {
    border-color: var(--color-warning);
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.2);
}

/* Actions Footer (Buttons) */
.actions-group {
    display: flex;
    gap: 16px;
    margin-top: 25px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition-bounce);
    text-decoration: none;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--text-inverse);
    flex-grow: 2;
    box-shadow: 0 4px 16px rgba(var(--color-primary-rgb), 0.25);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(var(--color-primary-rgb), 0.4);
    filter: brightness(1.08);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
    filter: brightness(0.95);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    flex-grow: 1;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Error States Alert Card */
.alert-card {
    background: var(--color-error-bg);
    border: 1px solid rgba(244, 63, 94, 0.2);
    color: var(--text-main);
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 25px;
    display: flex;
    align-items: flex-start;
    animation: shake 0.5s ease-in-out;
}

.alert-icon {
    font-size: 22px;
    color: var(--color-error);
    margin-right: 16px;
    margin-top: 2px;
}

.alert-content h4 {
    font-family: var(--font-display);
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-main);
}

.alert-content p {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-muted);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

/* View Control Utility */
.view-step {
    display: none;
}

.view-step.active {
    display: block;
    animation: fadeSlide 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Sokrates Guide Accordion */
.sokrates-guide {
    margin-top: 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition-smooth);
}

.sokrates-guide[open] {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(var(--color-primary-rgb), 0.2);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.guide-summary {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    list-style: none;
    user-select: none;
    transition: var(--transition-smooth);
}

.guide-summary::-webkit-details-marker {
    display: none;
}

.guide-summary:hover {
    background: rgba(255, 255, 255, 0.02);
}

.summary-title {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.summary-title i {
    color: var(--color-primary);
    font-size: 1.1rem;
}

.summary-chevron {
    font-size: 0.85rem;
    color: var(--text-muted);
    transition: transform 0.3s ease;
    display: inline-block;
}

.sokrates-guide[open] .summary-chevron {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.guide-content {
    padding: 0 20px 20px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-main);
    animation: fadeIn 0.4s ease;
}

.guide-intro {
    color: var(--text-muted);
    margin: 15px 0;
}

.steps-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: left;
}

.step-card {
    display: flex;
    gap: 15px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
}

.step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-inverse);
    flex-shrink: 0;
    margin-top: 2px;
}

.step-desc {
    flex-grow: 1;
    color: var(--text-main);
}

.step-desc strong {
    color: var(--text-main);
    font-weight: 600;
}

.step-desc code {
    font-family: monospace;
    background: rgba(255, 255, 255, 0.08);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--color-code-text);
}

.field-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.field-tag {
    background: rgba(var(--color-primary-rgb), 0.1);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
    color: var(--color-accent);
    font-family: monospace;
    font-size: 0.775rem;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    display: inline-block;
}

/* Responsive refinements */
@media (max-width: 680px) {
    .glass-panel {
        padding: 24px;
    }
    
    .actions-group {
        flex-direction: column-reverse;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    .app-container {
        padding: 20px 10px;
    }

    .upload-grid {
        grid-template-columns: 1fr;
    }
}

/* Footer Info */
footer {
    margin-top: 30px;
    text-align: center;
    font-size: 0.775rem;
    color: var(--text-muted);
    opacity: 0.6;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition-bounce);
    z-index: 100;
}

.theme-toggle-btn:hover {
    transform: scale(1.08) rotate(15deg);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.theme-icon-light {
    display: none;
}

:root[data-theme="light"] .theme-icon-dark {
    display: none;
}

:root[data-theme="light"] .theme-icon-light {
    display: block;
}