/* ======================================================
   MangroveAI — Modern Dashboard Theme
   ====================================================== */

/* ── 1. Design Tokens ── */
:root {
    --sidebar-width: 260px;
    --topbar-height: 64px;

    --color-primary:      #006840;
    --color-primary-dark: #004d2e;
    --color-primary-light:#e6f4ed;
    --color-accent:       #10b981;
    --color-sky:          #0ea5e9;
    --color-amber:        #f59e0b;
    --color-rose:         #f43f5e;
    --color-brown:        #92400e;

    --sidebar-bg:   #0d1f17;
    --sidebar-text: #a3bfb0;
    --sidebar-active-bg: rgba(0,104,64,.25);
    --sidebar-active-text: #4ade80;
    --topbar-bg:    #ffffff;
    --body-bg:      #f0fdf4;
    --card-bg:      #ffffff;
    --border-color: #e2e8f0;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
    --shadow-lg: 0 10px 30px rgba(0,0,0,.1);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --font: 'Inter', system-ui, -apple-system, sans-serif;
}

/* ── 2. Reset & Base ── */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--body-bg);
    color: #1e293b;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ── 3. Sidebar ── */
.app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: 1040;
    transition: transform .3s ease;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 1.25rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,.06);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: .75rem;
    text-decoration: none;
}

.brand-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 10px;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: .95rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(16,185,129,.35);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-name {
    font-size: 1rem;
    font-weight: 700;
    color: #f1f5f9;
    letter-spacing: -.01em;
}

.brand-tagline {
    font-size: .7rem;
    color: var(--sidebar-text);
    font-weight: 400;
}

.sidebar-close-btn {
    background: none;
    border: none;
    color: var(--sidebar-text);
    font-size: 1.1rem;
    cursor: pointer;
    padding: .35rem;
    border-radius: 6px;
    line-height: 1;
}
.sidebar-close-btn:hover { color: #fff; }

/* Sidebar Nav */
.sidebar-nav {
    flex: 1;
    padding: 1.25rem .75rem;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-section-label {
    font-size: .65rem;
    font-weight: 600;
    letter-spacing: .08em;
    color: #4a6a57;
    padding: .4rem .6rem;
    margin-bottom: .15rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .65rem .9rem;
    border-radius: var(--radius-sm);
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    transition: all .2s ease;
    position: relative;
    white-space: nowrap;
}

.sidebar-link:hover {
    background: rgba(255,255,255,.06);
    color: #e2e8f0;
}

.sidebar-link.active {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-active-text);
}

.sidebar-link.active .link-icon { color: var(--sidebar-active-text); }

.link-icon {
    width: 20px;
    text-align: center;
    font-size: .9rem;
    color: #5a7d6a;
    flex-shrink: 0;
    transition: color .2s;
}

.link-label { flex: 1; }

.step-badge {
    font-size: .6rem;
    font-weight: 700;
    background: rgba(255,255,255,.08);
    color: #5a7d6a;
    padding: .15em .45em;
    border-radius: 999px;
    letter-spacing: .03em;
}

.sidebar-link.active .step-badge {
    background: rgba(74,222,128,.15);
    color: var(--sidebar-active-text);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 1rem .75rem;
    border-top: 1px solid rgba(255,255,255,.06);
}

.sidebar-footer-badge {
    font-size: .7rem;
    color: #3d5a47;
    background: rgba(255,255,255,.04);
    padding: .5rem .75rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
}

/* Mobile Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 1039;
    backdrop-filter: blur(2px);
}
.sidebar-overlay.active { display: block; }

/* ── 4. Main Wrapper ── */
.main-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left .3s ease;
}

/* ── 5. Topbar ── */
.app-topbar {
    position: sticky;
    top: 0;
    height: var(--topbar-height);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.75rem;
    z-index: 100;
    flex-shrink: 0;
}

.topbar-menu-btn {
    background: none;
    border: none;
    font-size: 1.1rem;
    color: #64748b;
    cursor: pointer;
    padding: .4rem;
    border-radius: 6px;
    line-height: 1;
}
.topbar-menu-btn:hover { background: #f1f5f9; color: #1e293b; }

.topbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: .5rem;
    flex: 1;
    font-size: .875rem;
}

.breadcrumb-app {
    color: #94a3b8;
    font-weight: 500;
}

.breadcrumb-sep {
    font-size: .65rem;
    color: #cbd5e1;
}

.breadcrumb-page {
    color: #1e293b;
    font-weight: 600;
}

.topbar-right { display: flex; align-items: center; gap: 1rem; }

.online-badge {
    display: flex;
    align-items: center;
    gap: .45rem;
    font-size: .8rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: .35rem .8rem;
    border-radius: 999px;
}

.online-dot {
    width: 7px;
    height: 7px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: .6; transform: scale(1.3); }
}

/* ── 6. Page Content ── */
.page-content {
    flex: 1;
    padding: 2rem 1.75rem 2.5rem;
    width: 100%;
    min-width: 0;
}

/* ── 7. App Footer ── */
.app-footer {
    padding: .75rem 1.75rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: .15rem;
    font-size: .78rem;
    color: #94a3b8;
    background: var(--topbar-bg);
    flex-shrink: 0;
}

.footer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: 1rem;
}

.footer-right-text {
    color: #64748b;
    font-size: .75rem;
}

.footer-dev {
    font-size: .75rem;
    color: var(--color-accent);
    opacity: .9;
}

.footer-sep {
    color: #475569;
    flex-shrink: 0;
}

/* ── 8. Cards (Bootstrap override) ── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .2s ease, transform .2s ease;
    overflow: hidden;
}

.card:hover { box-shadow: var(--shadow-md); }

.card-header {
    padding: 1rem 1.5rem !important;
    font-weight: 600;
    font-size: .9rem;
    background: transparent !important;
    border-bottom: 1px solid var(--border-color) !important;
    display: flex;
    align-items: center;
    gap: .5rem;
}

.card-header.bg-primary  { background: var(--color-primary) !important; color: #fff !important; border-color: transparent !important; }
.card-header.bg-success  { background: var(--color-accent) !important; color: #fff !important; border-color: transparent !important; }
.card-header.bg-info     { background: var(--color-sky) !important; color: #fff !important; border-color: transparent !important; }
.card-header.bg-warning  { background: var(--color-amber) !important; color: #fff !important; border-color: transparent !important; }
.card-header.bg-danger   { background: var(--color-rose) !important; color: #fff !important; border-color: transparent !important; }

.card-body { padding: 1.5rem !important; }

.card-title { font-weight: 600; font-size: .95rem; margin-bottom: 0; }

/* ── 9. Buttons ── */
.btn {
    font-family: var(--font);
    font-weight: 500;
    font-size: .875rem;
    border-radius: var(--radius-sm) !important;
    padding: .55rem 1.2rem !important;
    transition: all .2s ease !important;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: #fff !important;
}
.btn-primary:hover {
    background: var(--color-primary-dark) !important;
    border-color: var(--color-primary-dark) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,104,64,.35) !important;
}

.btn-success {
    background: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
    color: #fff !important;
}
.btn-success:hover {
    background: #059669 !important;
    border-color: #059669 !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16,185,129,.35) !important;
}

.btn-info {
    background: var(--color-sky) !important;
    border-color: var(--color-sky) !important;
    color: #fff !important;
}
.btn-info:hover {
    background: #0284c7 !important;
    border-color: #0284c7 !important;
    transform: translateY(-1px);
}

.btn-warning {
    background: var(--color-amber) !important;
    border-color: var(--color-amber) !important;
    color: #fff !important;
}
.btn-warning:hover { background: #d97706 !important; border-color: #d97706 !important; }

.btn-outline-primary {
    color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
}
.btn-outline-primary:hover {
    background: var(--color-primary) !important;
    color: #fff !important;
}

.btn-outline-success {
    color: var(--color-accent) !important;
    border-color: var(--color-accent) !important;
}
.btn-outline-success:hover {
    background: var(--color-accent) !important;
    color: #fff !important;
}

.btn-lg { padding: .75rem 1.75rem !important; font-size: .95rem !important; }
.btn-sm { padding: .35rem .85rem !important; font-size: .8rem !important; }

.btn:disabled {
    opacity: .45 !important;
    transform: none !important;
    box-shadow: none !important;
    cursor: not-allowed;
}

/* ── 10. Badges ── */
.badge {
    font-family: var(--font);
    font-size: .72rem;
    font-weight: 600;
    padding: .3em .65em;
    border-radius: 6px;
}

/* ── 11. Progress ── */
.progress {
    height: 8px;
    border-radius: 999px !important;
    background: #e2e8f0 !important;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent)) !important;
    border-radius: 999px;
    transition: width .5s ease !important;
}

.progress-bar.bg-success { background: linear-gradient(90deg, var(--color-accent), #6ee7b7) !important; }

/* ── 12. Alerts (Bootstrap) ── */
.alert {
    border: none !important;
    border-radius: var(--radius-sm) !important;
    font-size: .875rem;
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: .6rem;
    padding: .85rem 1rem !important;
}

.alert-success { background: #dcfce7 !important; color: #166534 !important; }
.alert-danger  { background: #fee2e2 !important; color: #991b1b !important; }
.alert-info    { background: #e0f2fe !important; color: #075985 !important; }
.alert-warning { background: #fef9c3 !important; color: #854d0e !important; }

/* Flash messages */
.flash-alert {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .85rem 1rem;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-weight: 500;
    margin-bottom: .75rem;
    position: relative;
}

.flash-success { background: #dcfce7; color: #166534; }
.flash-danger  { background: #fee2e2; color: #991b1b; }

.flash-close {
    background: none;
    border: none;
    cursor: pointer;
    margin-left: auto;
    color: inherit;
    opacity: .6;
    font-size: .85rem;
    padding: .1rem .25rem;
    line-height: 1;
}
.flash-close:hover { opacity: 1; }

/* ── 13. Upload Areas ── */
.upload-area {
    background: #fafcff;
    border: 2px dashed #cbd5e1 !important;
    border-radius: var(--radius-md) !important;
    padding: 2.5rem 1.5rem !important;
    text-align: center;
    transition: all .25s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--color-primary) !important;
    background: var(--color-primary-light);
    transform: scale(1.01);
}

.upload-area.dragover {
    border-color: var(--color-accent) !important;
    background: #d1fae5 !important;
    transform: scale(1.02);
}

/* ── 14. Toasts (Bootstrap override) ── */
.toast {
    border-radius: var(--radius-sm) !important;
    border: none !important;
    box-shadow: var(--shadow-lg) !important;
    font-size: .875rem;
    font-family: var(--font);
}

.toast-container {
    z-index: 1090 !important;
}

/* ── 15. Modals ── */
.modal-content {
    border: none !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-lg);
    font-family: var(--font);
}

.modal-header {
    border-bottom: 1px solid var(--border-color) !important;
    padding: 1.25rem 1.5rem !important;
    font-weight: 700;
}

.modal-footer {
    border-top: 1px solid var(--border-color) !important;
    padding: 1rem 1.5rem !important;
}

/* ── 16. Tables ── */
.table {
    font-size: .875rem;
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background: #f8fafc !important;
    font-weight: 600;
    font-size: .78rem;
    letter-spacing: .03em;
    text-transform: uppercase;
    color: #64748b;
    border-bottom: 1px solid var(--border-color) !important;
    padding: .75rem 1rem !important;
}

.table td {
    padding: .75rem 1rem !important;
    border-bottom: 1px solid #f1f5f9 !important;
    vertical-align: middle;
}

.table tr:last-child td { border-bottom: none !important; }
.table tbody tr:hover { background: #f8fafc; }

.table-striped tbody tr:nth-of-type(even) { background: #fafcff !important; }

/* ── 17. List Groups ── */
.list-group-item {
    border-color: var(--border-color) !important;
    font-size: .875rem;
    padding: .75rem 1rem !important;
}

.list-group-item:first-child { border-radius: var(--radius-sm) var(--radius-sm) 0 0 !important; }
.list-group-item:last-child  { border-radius: 0 0 var(--radius-sm) var(--radius-sm) !important; }

/* ── 18. Form Controls ── */
.form-control, .form-select {
    font-family: var(--font);
    font-size: .875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm) !important;
    padding: .55rem .9rem !important;
    background: #fff;
    color: #1e293b;
    transition: border-color .2s, box-shadow .2s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 3px rgba(0,104,64,.15) !important;
    outline: none;
}

.form-label {
    font-size: .85rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: .35rem;
}

.form-check-input:checked {
    background-color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
}

/* ── 19. Feature / Stat Cards ── */
.stat-card {
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 120px;
    height: 120px;
    background: rgba(255,255,255,.08);
    border-radius: 50%;
}

.stat-card.bg-success { background: linear-gradient(135deg, var(--color-accent), #6ee7b7) !important; }
.stat-card.bg-info    { background: linear-gradient(135deg, var(--color-sky), #7dd3fc) !important; }
.stat-card.bg-warning { background: linear-gradient(135deg, var(--color-amber), #fcd34d) !important; }
.stat-card.bg-primary { background: linear-gradient(135deg, var(--color-primary), var(--color-accent)) !important; }

/* ── 20. Model Cards ── */
.model-card {
    border-left: 4px solid var(--color-primary) !important;
    transition: all .2s ease;
}

.model-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.model-card.best-model {
    border-left-color: var(--color-amber) !important;
    background: linear-gradient(135deg, #fffev4, #fef9c3) !important;
}

/* ── 21. Class Color Indicators ── */
.class-color {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    flex-shrink: 0;
}

.class-0 { background: #3b82f6; }   /* Tubuh Air */
.class-1 { background: #22c55e; }   /* Vegetasi Non-Mangrove */
.class-2 { background: #006840; }   /* Mangroves */
.class-3 { background: #ef4444; }   /* Lahan Terbangun */
.class-4 { background: #92400e; }   /* Lahan Terbuka */

/* ── 22. Loading Spinner ── */
.loading {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(0,0,0,.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin .8s linear infinite;
    vertical-align: middle;
}

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

/* Bootstrap spinner override */
.spinner-border {
    border-color: rgba(0,104,64,.2) !important;
    border-top-color: var(--color-primary) !important;
}

.spinner-border-sm { width: 1rem !important; height: 1rem !important; border-width: .2em !important; }

/* ── 23. Training / Prediction Steps ── */
.training-step {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .85rem 1rem;
    background: #fff;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    margin-bottom: .5rem;
    transition: all .2s ease;
    font-size: .875rem;
}

.training-step.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
    font-weight: 600;
}

.training-step.completed {
    background: #dcfce7;
    border-color: #86efac;
    color: #166534;
}

/* ── 24. Success Checkmark (SVG animation) ── */
.success-checkmark {
    width: 72px; height: 72px;
    border-radius: 50%;
    display: block;
    stroke-width: 3;
    stroke: var(--color-accent);
    stroke-miterlimit: 10;
    margin: 1.5rem auto;
    box-shadow: inset 0 0 0 var(--color-accent);
    animation: fill .4s ease-in-out .4s forwards, scale .3s ease-in-out .9s both;
}
.success-checkmark__circle {
    stroke-dasharray: 166; stroke-dashoffset: 166;
    stroke-width: 3; stroke-miterlimit: 10;
    stroke: var(--color-accent); fill: none;
    animation: stroke .6s cubic-bezier(.65,0,.45,1) forwards;
}
.success-checkmark__check {
    transform-origin: 50% 50%;
    stroke-dasharray: 48; stroke-dashoffset: 48;
    animation: stroke .3s cubic-bezier(.65,0,.45,1) .8s forwards;
}
@keyframes stroke { 100% { stroke-dashoffset: 0; } }
@keyframes scale  { 0%,100% { transform: none; } 50% { transform: scale3d(1.1,1.1,1); } }
@keyframes fill   { 100% { box-shadow: inset 0 0 0 30px var(--color-accent); } }

/* ── 25. Utility overrides ── */
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-accent) !important; }
.bg-primary { background: var(--color-primary) !important; }
.bg-success { background: var(--color-accent) !important; }

.text-primary-custom { color: var(--color-primary) !important; }
.bg-primary-custom   { background: var(--color-primary) !important; }
.border-primary-custom { border-color: var(--color-primary) !important; }

/* Smooth section transitions */
[class*="d-none"] { transition: none; }

/* ── 26. Hero (index.html) ── */
.hero-section {
    padding: .5rem 0 2rem;
}

.hero-icon-wrap {
    width: 80px; height: 80px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 20px;
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 24px rgba(0,104,64,.3);
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    height: 100%;
    transition: all .2s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    color: inherit;
    text-decoration: none;
}

.feature-icon-circle {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.step-circle {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: .75rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ── 27. Responsive ── */
@media (max-width: 991.98px) {
    .app-sidebar {
        transform: translateX(-100%);
    }
    .app-sidebar.open {
        transform: translateX(0);
    }
    .main-wrapper {
        margin-left: 0;
    }
    .page-content {
        padding: 1.5rem 1rem;
    }
    .app-topbar {
        padding: 0 1rem;
    }
}

@media (max-width: 575.98px) {
    .page-content { padding: 1rem .75rem 1.5rem; }
    .card-body { padding: 1rem !important; }
    .app-footer { padding: .75rem 1rem; }
}


/* Cards */
.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* Buttons */
.btn {
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #004d26;
    border-color: #004d26;
    transform: translateY(-1px);
}

/* Upload Areas */
.upload-area {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border: 2px dashed #ccc !important;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.upload-area:hover::before {
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        transform: rotate(45deg) translateX(-100%);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: rotate(45deg) translateX(100%);
        opacity: 0;
    }
}

.upload-area:hover {
    border-color: var(--primary-color) !important;
    background: linear-gradient(135deg, #e8f5e8 0%, #c1e1c1 100%);
    transform: scale(1.02);
}

.upload-area.dragover {
    border-color: var(--secondary-color) !important;
    background: linear-gradient(135deg, #d4edda 0%, #a7d7aa 100%) !important;
    transform: scale(1.05);
}

/* Progress Bars */
.progress {
    height: 10px;
    border-radius: 10px;
    background-color: #e9ecef;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    transition: width 0.6s ease;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 10px;
    font-weight: 500;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f1b2b7 100%);
    color: #721c24;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #b6d4d9 100%);
    color: #0c5460;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #fce4a2 100%);
    color: #856404;
}

/* Status Badges */
.badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.5em 0.75em;
    border-radius: 0.5rem;
}

/* Model Cards */
.model-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s ease;
}

.model-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.15);
}

.model-card.best-model {
    border-left-color: var(--warning-color);
    background: linear-gradient(135deg, #fff8e1 0%, #fff3c4 100%);
}

/* Training Progress */