:root{
    --toolbar: linear-gradient(135deg, #1e3a5f 0%, #2d5a8c 50%, #1a3a5c 100%);
    --accent:#0066cc;
    --toolbar-height:56px;
    --panel:linear-gradient(180deg,#f5f6f8 0%, #eef0f5 100%);
    --canvas-bg:#ffffff;
    --muted:#6b7280;
    --dropdown-bg:#fff;
    --shadow:0 8px 24px rgba(30, 58, 95, 0.1);
    --radius:12px;
    --primary:#0066cc;
    --primary-dark:#004fa3;
    --secondary:#0080ff;
    --success:#059669;
    --warning:#d97706;
}
html,body{height:100%;margin:0;font-family:Segoe UI, Arial, sans-serif;background:#f3f5f7}
.toolbar{
    display:flex;
    gap:14px;
    padding:14px 24px;
    background:var(--toolbar);
    align-items:center;
    color:#fff;
    box-shadow:0 8px 32px rgba(15,37,66,0.25), inset 0 1px 0 rgba(255,255,255,0.1);
    user-select:none;
    border-radius:0 0 var(--radius) var(--radius);
    min-height:56px;
    position:relative;
    z-index:10;
    overflow-x:auto;
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,0.1);
}
/* top menu groups (File, Edit, View, Object) */
.menu {
    position:relative;
}
.menu-btn {
    background:rgba(255,255,255,0.12);
    border:1.5px solid rgba(255,255,255,0.2);
    color:#fff;
    padding:10px 18px;
    border-radius:10px;
    cursor:pointer;
    font-weight:600;
    font-size:0.98rem;
    transition:all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow:0 4px 12px rgba(0,0,0,0.2);
    white-space:nowrap;
    letter-spacing:0.3px;
}
.menu-btn:hover, .menu-btn:focus {
    background:linear-gradient(90deg, rgba(0,102,204,0.2) 0%, rgba(0,128,255,0.2) 100%);
    border-color:rgba(0,102,204,0.5);
    box-shadow:0 4px 12px rgba(0,102,204,0.25);
    outline:none;
    transform:translateY(-1px);
    backdrop-filter:blur(8px);
}
.dropdown {
    position:fixed;
    top:50% !important;
    left:50% !important;
    transform:translate(-50%, -50%) scale(1) !important;
    min-width:320px;
    max-width:90vw;
    background:#fff;
    color:#222;
    border-radius:16px;
    box-shadow:0 25px 80px rgba(0,0,0,0.35);
    display:none !important;
    z-index:1001;
    padding:28px;
    border:1.5px solid #e0e7f1;
    animation:popupIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    backdrop-filter:blur(10px);
}
@keyframes popupIn { 
    from { 
        opacity:0; 
        transform:translate(-50%, -50%) scale(0.8);
    } 
    to { 
        opacity:1; 
        transform:translate(-50%, -50%) scale(1);
    }
}
.dropdown.show {
    display:block !important;
}
.dropdown-backdrop {
    position:fixed;
    top:0 !important;
    left:0 !important;
    width:100% !important;
    height:100% !important;
    background:rgba(0,0,0,0.45);
    display:none !important;
    z-index:1000;
    animation:fadeInBg 0.25s ease;
}
.dropdown-backdrop.show {
    display:block !important;
}
@keyframes fadeInBg {
    from { opacity:0; }
    to { opacity:1; }
}
.dropdown button {
    width:100%;
    text-align:left;
    border:0;
    padding:12px 14px;
    background:transparent;
    cursor:pointer;
    border-radius:8px;
    font-size:1rem;
    transition:all 0.18s;
    margin:6px 0;
    font-weight:500;
}
.dropdown button:first-child {
    margin-top:0;
}
.dropdown button:last-child {
    margin-bottom:0;
}
.dropdown button:hover {
    background:linear-gradient(90deg, #f0f4ff 0%, #fff3f3 100%);
    color:var(--primary);
    transform:translateX(4px);
}
.toolbar .logo {
    width:38px;
    height:38px;
    border-radius:50%;
    background:linear-gradient(135deg,#e50914 60%,#fff 100%);
    display:flex;
    align-items:center;
    justify-content:center;
    margin-right:12px;
    box-shadow:0 4px 16px rgba(229,9,20,0.25), inset 0 1px 0 rgba(255,255,255,0.3);
    font-size:1.4rem;
    font-weight:900;
    color:#fff;
    letter-spacing:1px;
    border:2px solid #fff;
    outline:2px solid rgba(229,9,20,0.4);
    outline-offset:-6px;
    transition:all 0.3s ease;
}
.toolbar .logo:hover{
    box-shadow:0 6px 20px rgba(229,9,20,0.35), inset 0 1px 0 rgba(255,255,255,0.3);
    transform:scale(1.05);
}
.toolbar .title{
    font-size:1.5rem;
    font-weight:700;
    margin:0 20px 0 12px;
    color:#ffffff;
    letter-spacing:1.5px;
    position:relative;
    display:flex;
    align-items:center;
    font-family:'Segoe UI', 'Arial', sans-serif;
    text-transform:uppercase;
    white-space:nowrap;
    filter:drop-shadow(0 1px 3px rgba(0, 0, 0, 0.2));
}
/* .tool-row, .tool-btn styles removed (no longer used) */
.container{display:flex;height:calc(100vh - 56px);}
.sidebar{
    width:260px;
    background:linear-gradient(180deg, #f8f9fd 0%, #f1f3f8 100%);
    padding:24px 16px 16px 16px;
    border-right:2px solid #e0e5f0;
    box-sizing:border-box;
    overflow:auto;
    border-radius:0 0 var(--radius) 0;
    box-shadow:2px 0 16px rgba(91,110,225,0.08);
    min-height:100%;
}
.sidebar::-webkit-scrollbar{
    width:6px;
}
.sidebar::-webkit-scrollbar-track{
    background:transparent;
}
.sidebar::-webkit-scrollbar-thumb{
    background:linear-gradient(180deg, #5b6ee1 0%, #e50914 100%);
    border-radius:10px;
}
.sidebar::-webkit-scrollbar-thumb:hover{
    background:linear-gradient(180deg, #e50914 0%, #5b6ee1 100%);
}
.group{
    margin-bottom:18px;
    padding:16px 14px;
    background:linear-gradient(135deg, #ffffff 0%, #f9fbff 100%);
    border-radius:14px;
    border:1.5px solid #e5ecf7;
    box-shadow:0 2px 12px rgba(91,110,225,0.06), inset 0 1px 0 rgba(255,255,255,0.8);
    transition:all 0.3s ease;
}
.group:hover{
    border-color:#d0dffb;
    box-shadow:0 6px 24px rgba(91,110,225,0.12), inset 0 1px 0 rgba(255,255,255,0.8);
    transform:translateY(-1px);
}
.group h3{
    margin:0 0 14px 0;
    font-size:1.1rem;
    color:#23243a;
    letter-spacing:0.6px;
    font-weight:700;
    background:linear-gradient(90deg,#5b6ee1 0%,#6b7fee 50%,#e50914 100%);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
    background-clip:text;
}
.group .btn{
    display:flex;
    width:100%;
    box-sizing:border-box;
    background:linear-gradient(135deg,#ffffff 0%,#f5f8ff 100%);
    border:1.5px solid #cfe0f0;
    padding:16px 14px;
    border-radius:12px;
    margin:8px 0;
    cursor:pointer;
    text-align:left;
    font-size:0.97rem;
    font-weight:600;
    color:#1a3a5c;
    transition:all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow:0 3px 12px rgba(15,37,66,0.08);
    position:relative;
    overflow:hidden;
    justify-content:space-between;
    align-items:center;
    gap:10px;
    height:50px;
    white-space:nowrap;
}
.group .btn span:first-child{
    flex:1;
    overflow:hidden;
    text-overflow:ellipsis;
}
.btn{
    display:flex;
    background:linear-gradient(90deg,#fff 60%,#f6f8ff 100%);
    border:1.5px solid #d0d7db;
    padding:14px 12px;
    border-radius:10px;
    margin:8px 0;
    cursor:pointer;
    text-align:left;
    font-size:0.96rem;
    font-weight:600;
    color:#3a3d5c;
    transition:all 0.22s ease;
    box-shadow:0 2px 8px rgba(44,62,80,0.04);
    position:relative;
    overflow:hidden;
    justify-content:space-between;
    align-items:center;
    gap:10px;
}
.btn::before{
    content:'';
    position:absolute;
    top:0;
    left:-100%;
    width:100%;
    height:100%;
    background:linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition:left 0.5s ease;
    pointer-events:none;
}
.btn:hover{
    background:linear-gradient(135deg,#e0eaff 0%,#fff5f7 100%);
    border-color:#5b6ee1;
    color:#5b6ee1;
    box-shadow:0 8px 24px rgba(91,110,225,0.2);
    transform:translateX(6px);
}
.btn:hover::before{
    left:100%;
    background:linear-gradient(90deg, transparent, rgba(255,23,68,0.2), transparent);
}
.key-hint{
    display:inline-block;
    background:linear-gradient(135deg, #5b6ee1 0%, #7b8ef5 50%, #ff1744 100%);
    color:#ffffff;
    padding:6px 12px;
    border-radius:8px;
    font-size:0.8rem;
    font-weight:800;
    min-width:32px;
    text-align:center;
    box-shadow:0 4px 14px rgba(255,23,68,0.3), inset 0 1px 0 rgba(255,255,255,0.25);
    font-family:'Courier New', monospace;
    flex-shrink:0;
    margin-left:auto;
    letter-spacing:0.6px;
    border:1.5px solid rgba(255,255,255,0.35);
    text-shadow:0 1px 3px rgba(0,0,0,0.3);
    transition:all 0.3s ease;
    transform:scale(0.95);
}
.btn:hover .key-hint{
    transform:scale(1.12);
    box-shadow:0 6px 20px rgba(255,23,68,0.4), inset 0 1px 0 rgba(255,255,255,0.3);
    background:linear-gradient(135deg, #ff1744 0%, #ff5a7f 50%, #5b6ee1 100%);
}
.canvas-wrap{
    flex:1;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    padding:28px 32px 20px 32px;
    box-sizing:border-box;
    background:linear-gradient(135deg, #f5f7fb 0%, #eef1f8 100%);
}
.drawing-area{
    flex:1;
    background:linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
    border-radius:20px;
    border:2px solid #e0e7f1;
    box-shadow:0 12px 40px rgba(15,37,66,0.12), inset 0 1px 0 rgba(255,255,255,0.8);
    position:relative;
    overflow:hidden;
    transition:all 0.3s ease;
}
.drawing-area:hover{
    box-shadow:0 16px 50px rgba(15,37,66,0.18), inset 0 2px 4px rgba(255,255,255,0.8);
    border-color:#c5d9f0;
}
#drawingCanvas{
    width:100%;
    height:100%;
    display:block;
    background:#ffffff;
    border-radius:18px;
}

/* Allow flex children to shrink properly (avoids extra whitespace on some viewports) */
.canvas-wrap, .drawing-area { min-height: 0; }
.status-bar{height:38px;background:linear-gradient(90deg,#fff 60%,#f6f8ff 100%);border-top:1.5px solid #e6eaec;display:flex;align-items:center;padding:0 18px;color:var(--muted);font-size:1rem;border-radius:0 0 var(--radius) var(--radius);box-shadow:0 2px 8px rgba(44,62,80,0.04);}
.small{font-size:0.93rem;color:var(--muted);}
.kbd{
    background:linear-gradient(90deg,#5b6ee1 60%,#cd676d 100%);
    border:1.5px solid #635cbd;padding:4px 12px;border-radius:8px;margin-left:10px;font-weight:700;color:#fff;box-shadow:0 2px 8px rgba(91,110,225,0.10);
    font-size:1.01rem;letter-spacing:0.5px;
}
.footer-actions{
    display:flex;
    gap:12px;
    align-items:center;
    margin-top:16px;
    flex-wrap:wrap;
}
.footer-actions .btn{
    flex:1;
    min-width:100px;
}
.legend{
    margin-top:12px;
    color:var(--muted);
    font-size:0.93rem;
    padding:10px;
    background:linear-gradient(135deg, rgba(91,110,225,0.05), rgba(229,9,20,0.03));
    border-radius:8px;
    border-left:3px solid var(--primary);
    font-style:italic;
}
.shortcuts-list{
    display:grid;
    grid-template-columns:1fr;
    gap:8px;
}
.shortcut-item{
    display:flex;
    align-items:center;
    gap:10px;
    padding:8px 10px;
    background:rgba(91,110,225,0.08);
    border-radius:6px;
    font-size:0.92rem;
    color:#3a3d5c;
    transition:all 0.2s ease;
    border:1px solid rgba(91,110,225,0.1);
}
.shortcut-item:hover{
    background:rgba(91,110,225,0.15);
    border-color:rgba(91,110,225,0.3);
    transform:translateX(2px);
}
.shortcut-item kbd{
    background:linear-gradient(90deg, #5b6ee1 60%, #e50914 100%);
    color:white;
    padding:3px 8px;
    border-radius:4px;
    font-size:0.85rem;
    font-weight:700;
    min-width:28px;
    text-align:center;
    box-shadow:0 2px 6px rgba(91,110,225,0.2);
    font-family:monospace;
}
/* Modal styles */
#aiNameModal {
    display: none;
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(44, 62, 80, 0.13);
    z-index: 3000;
    align-items: center;
    justify-content: center;
}
#aiNameModal > div {
    background: #fff;
    padding: 32px 38px 22px 38px;
    border-radius: 18px;
    box-shadow: 0 8px 32px rgba(91, 110, 225, 0.13);
    min-width: 320px;
    max-width: 90vw;
}
.ai-gemini-btn {
    background: linear-gradient(90deg, #5b6ee1 60%, #b46064 100%);
    color: #fff;
    font-weight: 700;
    font-size: 1.08rem;
    border: none;
    box-shadow: 0 4px 16px rgba(91,110,225,0.13);
    border-radius: 10px;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    padding: 12px 28px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: background 0.18s, box-shadow 0.18s, transform 0.18s;
}
.ai-gemini-btn:hover, .ai-gemini-btn:focus {
    background: linear-gradient(90deg, #c06a6e 60%, #5b6ee1 100%);
    box-shadow: 0 6px 24px rgba(91,110,225,0.18);
    outline: none;
}
@keyframes spin {
    0% { transform: rotate(0deg);}
    100% { transform: rotate(360deg);}
}
.gemini-badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.93rem;
    color: #5b6ee1;
    background: #f3f7ff;
    border-radius: 7px;
    padding: 2px 10px 2px 7px;
    margin-left: 12px;
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(91,110,225,0.07);
    letter-spacing: 0.2px;
    position: absolute;
    right: 10px;
    bottom: 7px;
    z-index: 2;
}
.gemini-badge svg {
    width: 16px; height: 16px; margin-right: 4px;
    vertical-align: middle;
}
.gemini-spinner-logo svg { display: block; }
@media (prefers-color-scheme: dark) {
    .gemini-spinner-logo svg circle { fill: #23243a; }
}

/* Responsive rules */
/* Mobile first adjustments */
.mobile-toggle { display: none; }
.toolbar .mobile-toggle { display: none; }

@media (max-width: 900px) {
    .sidebar { 
        position: fixed; top: var(--toolbar-height); left: 0; bottom: 0; width: 78vw; max-width: 360px; z-index: 2000;
        transform: translateX(-100%); transition: transform 0.22s ease; box-shadow: 0 12px 40px rgba(18,24,40,0.28);
        border-radius: 0; margin: 0; padding: 18px; background: var(--panel);
    }
    .sidebar.open { transform: translateX(0); }
    .canvas-wrap { padding: 14px; }
    .toolbar { padding: 10px 12px; }
    .toolbar .mobile-toggle { display:inline-block; margin-left:8px; font-size:1.1rem; padding:8px 10px; }
    .btn { padding: 14px 12px; font-size:1.04rem; }
    .ai-gemini-btn { padding: 12px 18px; }
    #drawingCanvas{ border-radius:12px; }
    .title { display:none; }
    .dropdown { left: 8px; }
    .status-bar { padding:0 12px; }
}

@media (max-width: 480px) {
    .toolbar { min-height:64px; gap:8px; }
    .btn { padding: 16px 12px; font-size:1.02rem; }
    .ai-gemini-btn { padding: 10px 14px; font-size:0.98rem; }
    #drawingCanvas { background-size: cover; }
}

/* Backdrop for mobile sidebar */
.mobile-backdrop { position: fixed; top: var(--toolbar-height); left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.36); z-index: 1500; display:none; }
.mobile-backdrop.visible { display:block; }

/* ChemHelp Title Animation */
@keyframes titleGlow {
    0%, 100% {
        text-shadow: none;
        filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
    }
    50% {
        text-shadow: none;
        filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.15));
    }
}

/* Logo hover animation */
.toolbar .logo {
    transition: transform 0.2s ease, filter 0.2s ease;
    cursor: pointer;
    font-size: 1.5rem;
}

.toolbar .logo:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Prevent body scroll when sidebar open */
body.no-scroll { overflow: hidden; }

/* Dark Mode Styles */
body.dark-mode {
    background: #0a0e27 !important;
    color: #d1d5db !important;
}

body.dark-mode .toolbar {
    background: linear-gradient(135deg, #0f1729 0%, #151f3d 50%, #0a0e27 100%) !important;
}

body.dark-mode .sidebar {
    background: linear-gradient(180deg, #0f1729 0%, #151f3d 100%) !important;
    border-right-color: rgba(255, 255, 255, 0.05) !important;
}

body.dark-mode #drawingCanvas {
    background: #0a0e27 !important;
    color: #d1d5db !important;
}

body.dark-mode .panel {
    background: linear-gradient(180deg, #0f1729 0%, #151f3d 100%) !important;
    color: #d1d5db !important;
}

body.dark-mode .dropdown {
    background: #0f1729 !important;
    color: #d1d5db !important;
    border-color: rgba(0, 102, 204, 0.3) !important;
}

body.dark-mode .menu-btn {
    background: rgba(255, 255, 255, 0.08) !important;
    border-color: rgba(255, 255, 255, 0.15) !important;
    color: #e0e0e0 !important;
}

body.dark-mode .menu-btn:hover {
    background: rgba(0, 102, 204, 0.2) !important;
    border-color: rgba(0, 102, 204, 0.4) !important;
}

/* Dark Mode Modal Overrides */
body.dark-mode .modal {
    background-color: rgba(0, 0, 0, 0.85) !important;
}

body.dark-mode .modal-content {
    background-color: #1a1f3a !important;
    color: #d1d5db !important;
    border: 1px solid rgba(91, 110, 225, 0.4) !important;
}

body.dark-mode .modal-content h2,
body.dark-mode .modal-content h3,
body.dark-mode .modal-content h4,
body.dark-mode .modal-content p {
    color: #d1d5db !important;
}

body.dark-mode .close-modal {
    color: #888 !important;
}

body.dark-mode .close-modal:hover {
    color: #ccc !important;
}
    background-color: #5b6ee1 !important;
    color: #fff !important;
    border-color: #5b6ee1 !important;
}

body.dark-mode #chooseImageBtn:hover {
    background-color: #6b7ee8 !important;
}

body.dark-mode .btn-modal-primary {
    background-color: #5b6ee1 !important;
    color: #fff !important;
    border-color: #5b6ee1 !important;
}

body.dark-mode .btn-modal-primary:hover {
    background-color: #6b7ee8 !important;
}

body.dark-mode .btn-modal-secondary {
    background-color: #2a2f45 !important;
    color: #d1d5db !important;
    border: 1px solid rgba(91, 110, 225, 0.3) !important;
}

body.dark-mode .btn-modal-secondary:hover {
    background-color: #3a3f55 !important;
    border-color: rgba(91, 110, 225, 0.5) !important;
}

/* Notification Styles */
.notification {
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideIn 0.3s ease-out;
    max-width: 350px;
    backdrop-filter: blur(10px);
}

.notification.success {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: #fff;
}

.notification.error {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: #fff;
}

.notification.info {
    background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
    color: #fff;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(400px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(400px);
    }
}

.notification.removing {
    animation: slideOut 0.3s ease-out forwards;
}

/* ========== PHASE 3: IMAGE UPLOAD MODAL ========== */
.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #fff;
    color: #333;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content {
    background-color: #fff;
    color: #333;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.close-modal {
    cursor: pointer;
    float: right;
    font-size: 28px;
    font-weight: bold;
    color: #999;
    transition: color 0.3s;
}

.close-modal:hover {
    color: #333;
}

.image-drop-zone {
    border: 3px dashed #5b6ee1;
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    background-color: #f8f9ff;
    transition: all 0.3s;
    margin: 20px 0;
}

.image-drop-zone:hover {
    border-color: #4a5fc8;
    background-color: #f0f2ff;
}

.image-drop-zone.dragover {
    border-color: #ff6b6b;
    background-color: #ffe0e0;
    transform: scale(1.02);
}

#previewImg {
    max-height: 300px;
    max-width: 300px;
    object-fit: contain;
    margin: 0 auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-modal-primary {
    background-color: #5b6ee1;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
    width: 100%;
    transition: background-color 0.3s;
    box-sizing: border-box;
}

.btn-modal-primary:hover {
    background-color: #4a5fc8;
}

.btn-modal-primary:active {
    transform: scale(0.98);
}

.btn-modal-secondary {
    background-color: #ddd;
    color: #333;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    width: 100%;
    transition: background-color 0.3s;
    box-sizing: border-box;
}

.btn-modal-secondary:hover {
    background-color: #ccc;
}

.btn-modal-secondary:active {
    transform: scale(0.98);
}
/* ========== DARK MODE FOR MODALS ========== */
body.dark-mode .modal {
    background-color: rgba(0, 0, 0, 0.8);
}

body.dark-mode .modal-content {
    background-color: #1a1f3a;
    color: #d1d5db;
    border: 1px solid rgba(91, 110, 225, 0.3);
}

body.dark-mode .modal-content h2,
body.dark-mode .modal-content h3,
body.dark-mode .modal-content h4 {
    color: #e5e7eb;
}

body.dark-mode .modal-content p {
    color: #d1d5db;
}

body.dark-mode #imageInputSection {
    color: #d1d5db;
}

body.dark-mode .image-drop-zone {
    background-color: #0f1729;
    border-color: #5b6ee1;
    color: #d1d5db;
}

body.dark-mode .image-drop-zone:hover {
    background-color: #151f3d;
    border-color: #7b8ef5;
}

body.dark-mode .image-drop-zone.dragover {
    background-color: #2a1a1a;
    border-color: #ff8888;
}

body.dark-mode .close-modal {
    color: #888;
}

body.dark-mode .close-modal:hover {
    color: #ccc;
}

body.dark-mode #chooseImageBtn {
    background-color: #5b6ee1;
    color: #fff;
}

body.dark-mode #chooseImageBtn:hover {
    background-color: #6b7ee8;
}

body.dark-mode .btn-modal-primary {
    background-color: #5b6ee1;
    color: #fff;
}

body.dark-mode .btn-modal-primary:hover {
    background-color: #6b7ee8;
}

body.dark-mode .btn-modal-secondary {
    background-color: #2a2f45;
    color: #d1d5db;
    border: 1px solid rgba(91, 110, 225, 0.2);
}

body.dark-mode .btn-modal-secondary:hover {
    background-color: #3a3f55;
    border-color: rgba(91, 110, 225, 0.4);
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}