/* ==========================================================================
   Form 7 Acknowledgement Submission System - Professional Stylesheet
   ========================================================================== */

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --primary-border: #bfdbfe;

    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --accent: #3b82f6;

    --success: #16a34a;
    --success-hover: #15803d;
    --success-light: #dcfce7;
    --success-text: #166534;

    --danger: #dc2626;
    --danger-light: #fef2f2;
    --danger-border: #fecaca;

    --warning: #d97706;
    --warning-light: #fffbeb;
    --warning-border: #fef3c7;
    --warning-text: #b45309;

    --purple: #7c3aed;
    --purple-light: #f5f3ff;

    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 9999px;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Reset & Box Sizing */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-main);
    background-color: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Header & Navigation (Sleek Interface)
   ========================================================================== */

.app-header, .header {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    height: 60px;
}

.header-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-main);
}

.brand-logo-badge {
    width: 32px;
    height: 32px;
    background-color: var(--primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 800;
    font-size: 0.9rem;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.brand-logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: contain;
    flex-shrink: 0;
    display: block;
    transition: transform var(--transition-fast);
}

.brand-link:hover .brand-logo-img {
    transform: scale(1.04);
}

.brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background-color: var(--primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.brand-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
}

.brand-subtitle {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Badges */
.badge, .badge-system-active {
    background: #dcfce7;
    color: #166534;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-item {
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    transition: all 0.15s ease;
}

.nav-item:hover {
    color: var(--text-main);
    background-color: var(--neutral-100);
}

.nav-item.active {
    color: var(--primary);
    background-color: var(--primary-light);
    font-weight: 600;
}

.nav-item.admin-btn {
    border: 1px solid var(--border);
    background-color: #ffffff;
}

.nav-item.logout-btn {
    color: var(--danger);
    background-color: var(--danger-light);
}
.nav-item.logout-btn:hover {
    background-color: #fee2e2;
}

/* ==========================================================================
   Main Content Layout & Flash Messages
   ========================================================================== */

.main-content {
    flex: 1;
    max-width: 1280px;
    width: 100%;
    margin: 0 auto;
    padding: 1.75rem 1.5rem;
}

.flash-container {
    margin-bottom: 1.25rem;
}

.alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    margin-bottom: 0.75rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: var(--success-light);
    color: var(--success-text);
    border-color: #bbf7d0;
}

.alert-danger {
    background-color: var(--danger-light);
    color: #991b1b;
    border-color: var(--danger-border);
}

.alert-info, .alert-warning {
    background-color: var(--warning-light);
    color: var(--warning-text);
    border-color: var(--warning-border);
}

.notice-box {
    padding: 0.85rem 1rem;
    border-radius: 6px;
    font-size: 0.825rem;
    margin-bottom: 1.25rem;
    border: 1px solid var(--border);
    background-color: #ffffff;
}

.notice-warning {
    background-color: var(--warning-light);
    border-color: var(--warning-border);
    color: var(--warning-text);
}

/* ==========================================================================
   Buttons & Inputs (Sleek Interface)
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.65rem 1.25rem;
    border-radius: 6px;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.btn-sm {
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--neutral-100);
    color: var(--text-main);
    border-color: var(--border);
}
.btn-secondary:hover {
    background-color: var(--neutral-200);
}

.btn-success {
    background-color: var(--success);
    color: #ffffff;
}
.btn-success:hover {
    background-color: var(--success-hover);
}

.btn-danger {
    background-color: #dc2626;
    color: #ffffff;
    border: 1px solid #dc2626;
}
.btn-danger:hover:not(:disabled) {
    background-color: #b91c1c;
    border-color: #b91c1c;
}

.btn-outline-danger {
    background-color: #ffffff;
    color: #dc2626;
    border: 1px solid #fca5a5;
}
.btn-outline-danger:hover:not(:disabled) {
    background-color: #fee2e2;
    color: #991b1b;
    border-color: #ef4444;
}

.btn-outline, .filter-btn {
    background-color: #ffffff;
    color: var(--text-main);
    border: 1px solid var(--border);
}
.btn-outline:hover, .filter-btn:hover {
    background-color: var(--neutral-100);
    border-color: var(--neutral-300);
}

.active-filter {
    background-color: var(--primary) !important;
    color: #ffffff !important;
    border-color: var(--primary) !important;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Form Controls */
.form-group, .field-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 1.15rem;
}

.form-label, label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

.form-label.required::after {
    content: " *";
    color: var(--danger);
}

.optional-tag {
    font-size: 0.7rem;
    font-weight: normal;
    color: var(--text-muted);
    margin-left: 0.25rem;
}

.form-control, select, input[type="text"], input[type="date"], input[type="password"] {
    width: 100%;
    padding: 0.6rem 0.75rem;
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--text-main);
    background-color: #fcfcfc;
    border: 1px solid var(--border);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus, select:focus, input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
    background-color: #ffffff;
}

.form-control:disabled, select:disabled {
    background-color: #f1f5f9;
    color: var(--text-muted);
    cursor: not-allowed;
}

.form-control-sm {
    padding: 0.4rem 0.65rem;
    font-size: 0.8rem;
}

.field-hint {
    display: block;
    font-size: 0.725rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.field-error {
    display: block;
    font-size: 0.75rem;
    color: var(--danger);
    font-weight: 500;
    margin-top: 0.25rem;
}

/* ==========================================================================
   Searchable Dropdown Component (Fast Popup + Search within Dropdown)
   ========================================================================== */
.searchable-select {
    position: relative;
    width: 100%;
}

.sr-only-select {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.searchable-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 0.85rem;
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--text-main);
    background-color: #fcfcfc;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    text-align: left;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
    user-select: none;
}

.searchable-trigger:hover:not(:disabled) {
    border-color: #cbd5e1;
    background-color: #ffffff;
}

.searchable-trigger:focus, .searchable-trigger.open {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
    background-color: #ffffff;
    outline: none;
}

.searchable-trigger:disabled {
    background-color: #f1f5f9;
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.75;
}

.searchable-trigger .trigger-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    padding-right: 0.5rem;
    font-weight: 500;
}

.searchable-trigger .trigger-text.placeholder {
    color: #94a3b8;
    font-weight: 400;
}

.searchable-trigger .chevron-icon {
    width: 16px;
    height: 16px;
    color: #64748b;
    transition: transform 0.15s ease, color 0.15s ease;
    flex-shrink: 0;
}

.searchable-trigger.open .chevron-icon {
    transform: rotate(180deg);
    color: var(--primary);
}

.searchable-dropdown-popup {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    display: none;
    overflow: hidden;
    animation: dropdownPop 0.12s ease-out;
}

@keyframes dropdownPop {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-search-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid var(--border);
    background-color: #f8fafc;
}

.dropdown-search-wrapper .search-icon {
    color: #94a3b8;
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.dropdown-search-input {
    width: 100%;
    border: none;
    background: transparent;
    font-size: 0.85rem;
    color: var(--text-main);
    outline: none;
    padding: 0.2rem 0;
    font-family: inherit;
}

.dropdown-search-clear {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    padding: 2px 6px;
    font-size: 1.1rem;
    border-radius: 4px;
    line-height: 1;
}

.dropdown-search-clear:hover {
    color: var(--text-main);
    background-color: #e2e8f0;
}

.dropdown-meta {
    padding: 0.35rem 0.75rem;
    font-size: 0.7rem;
    color: #64748b;
    background-color: #f1f5f9;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

.dropdown-options-list {
    list-style: none;
    margin: 0;
    padding: 0.25rem 0;
    max-height: 240px;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.dropdown-option {
    padding: 0.55rem 0.75rem;
    font-size: 0.85rem;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color 0.1s ease, color 0.1s ease;
}

.dropdown-option:hover, .dropdown-option.highlighted {
    background-color: #eff6ff;
    color: var(--primary);
}

.dropdown-option.selected {
    background-color: #dbeafe;
    font-weight: 600;
    color: #1e40af;
}

.dropdown-option .option-check {
    color: var(--primary);
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-left: 0.5rem;
}

.dropdown-empty {
    padding: 1.25rem 0.75rem;
    text-align: center;
    color: #94a3b8;
    font-size: 0.825rem;
}

/* ==========================================================================
   EPIC Live Validation Styles
   ========================================================================== */
.epic-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.epic-input-wrapper .form-control {
    padding-right: 2.25rem;
}

.epic-status-indicator {
    position: absolute;
    right: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

.form-control.is-valid {
    border-color: #16a34a !important;
    background-color: #ffffff !important;
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.12) !important;
}

.form-control.is-invalid {
    border-color: #dc2626 !important;
    background-color: #ffffff !important;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12) !important;
}

.epic-live-feedback {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 0.35rem;
    transition: color 0.15s ease;
}

.epic-live-feedback.valid {
    color: #16a34a;
}

.epic-live-feedback.invalid {
    color: #dc2626;
}

.epic-live-feedback.guiding {
    color: #2563eb;
}

.text-uppercase {
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.font-mono {
    font-family: var(--font-mono);
}

/* ==========================================================================
   Public Form Page (Sleek Interface Panel)
   ========================================================================== */

.form-page-container {
    max-width: 660px;
    margin: 1.25rem auto;
}

.panel, .form-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    padding: 2rem;
}

.panel-header, .form-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.form-badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    background-color: var(--primary-light);
    border: 1px solid var(--primary-border);
    border-radius: 9999px;
    margin-bottom: 0.75rem;
}

.form-title {
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    margin-bottom: 0.4rem;
}

.form-description {
    font-size: 0.875rem;
    color: var(--text-muted);
    max-width: 520px;
    margin: 0 auto;
}

/* Derived District & Division Info Badge */
.derived-mapping-box {
    display: flex;
    align-items: center;
    justify-content: space-around;
    background-color: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
}

.mapping-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.mapping-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.mapping-value {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
}

.mapping-divider {
    width: 1px;
    height: 28px;
    background-color: var(--border);
}

/* File Dropzone (Sleek dashed container) */
.file-dropzone {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    background-color: #fafbfc;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.file-dropzone:hover, .file-dropzone.drag-over {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.file-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 10;
}

.dropzone-icon {
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.dropzone-text {
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.dropzone-specs {
    font-size: 0.725rem;
    color: var(--text-muted);
}

/* File Preview Inside Dropzone */
.file-preview-container {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    background-color: #ffffff;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.65rem 0.85rem;
    position: relative;
    z-index: 20;
}

.preview-img {
    width: 54px;
    height: 54px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.preview-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.preview-filename {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-main);
    word-break: break-all;
}

.preview-size {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.btn-remove-file {
    margin-top: 0.25rem;
    background: none;
    border: none;
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
}

/* Required Caution Text */
.caution, .caution-text {
    margin-top: 0.4rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: #b45309;
    background-color: #fffbeb;
    border: 1px solid #fef3c7;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    line-height: 1.45;
}

/* Spinner Animation */
.spinner-svg {
    width: 16px;
    height: 16px;
    animation: rotate 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
}
.spinner-track {
    stroke: rgba(255, 255, 255, 0.3);
}
.spinner-head {
    stroke: #ffffff;
    stroke-dasharray: 50;
    stroke-dashoffset: 20;
}
@keyframes rotate {
    100% { transform: rotate(360deg); }
}

/* ==========================================================================
   Success Confirmation Page (Sleek Interface)
   ========================================================================== */

.success-page-container {
    max-width: 600px;
    margin: 2rem auto;
}

.success-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    padding: 2.25rem 2rem;
    text-align: center;
}

.success-icon-badge {
    width: 60px;
    height: 60px;
    border-radius: 9999px;
    background-color: var(--success-light);
    color: var(--success-text);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    border: 2px solid #bbf7d0;
}

.success-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.4rem;
}

.success-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.reference-box {
    background-color: var(--primary-light);
    border: 1px solid var(--primary-border);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.reference-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    margin-bottom: 0.35rem;
}

.reference-value-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    margin-bottom: 0.25rem;
}

.reference-number {
    font-family: var(--font-mono);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--primary);
}

.btn-copy {
    background-color: #ffffff;
    border: 1px solid var(--primary-border);
    color: var(--primary);
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.725rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-copy:hover {
    background-color: var(--primary);
    color: #ffffff;
}

.reference-note {
    display: block;
    font-size: 0.725rem;
    color: var(--text-muted);
}

.receipt-details {
    background-color: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.85rem 1.15rem;
    margin-bottom: 1.75rem;
    text-align: left;
}

.receipt-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.45rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.825rem;
}

.receipt-row:last-child {
    border-bottom: none;
}

.receipt-label {
    color: var(--text-muted);
    font-weight: 500;
}

.receipt-value {
    color: var(--text-main);
    font-weight: 600;
    text-align: right;
}

.success-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

/* ==========================================================================
   Admin Login Page (Sleek Interface)
   ========================================================================== */

.login-page-container {
    max-width: 420px;
    margin: 3.5rem auto;
}

.login-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    padding: 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 1.75rem;
}

.login-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    background-color: #f1f5f9;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    border: 1px solid var(--border);
}

.login-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.35rem;
}

.login-description {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.password-wrapper {
    position: relative;
}

.btn-toggle-pwd {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
}
.btn-toggle-pwd:hover {
    color: var(--text-main);
}

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.back-link {
    font-size: 0.775rem;
    color: var(--text-muted);
    text-decoration: none;
}
.back-link:hover {
    color: var(--primary);
}

/* ==========================================================================
   Admin Dashboard (Sleek Interface)
   ========================================================================== */

.dashboard-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

.dashboard-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.dashboard-actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

/* Summary Metric Cards */
.summary-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.85rem;
}

.metric-card {
    background-color: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.85rem 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    box-shadow: none;
}

.metric-icon {
    width: 42px;
    height: 42px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.metric-icon-primary {
    background-color: var(--primary-light);
    color: var(--primary);
}

.metric-icon-success {
    background-color: var(--success-light);
    color: var(--success-text);
}

.metric-icon-info {
    background-color: #eff6ff;
    color: var(--primary);
}

.metric-icon-warning {
    background-color: var(--warning-light);
    color: var(--warning-text);
}

.metric-icon-purple {
    background-color: var(--purple-light);
    color: var(--purple);
}

.metric-info {
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.metric-value {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.2;
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.chart-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    padding: 1rem 1.25rem;
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.chart-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.chart-badge {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-muted);
    background-color: #f1f5f9;
    border: 1px solid var(--border);
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
}

.chart-body {
    position: relative;
    height: 220px;
    width: 100%;
}

/* Filters Card */
.filter-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    padding: 1.15rem 1.25rem;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.85rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.filter-title-row {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--text-main);
}

.filter-title {
    font-size: 0.875rem;
    font-weight: 600;
}

.filter-meta {
    font-size: 0.725rem;
    color: var(--text-muted);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.75rem;
    margin-bottom: 0.85rem;
}

.filter-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: 0.25rem;
}

.filter-actions {
    display: flex;
    gap: 0.5rem;
}

/* Submission Data Table (Sleek Interface) */
.table-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.table-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
}

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

.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    text-align: left;
}

.data-table th {
    background-color: #f1f5f9;
    color: var(--text-muted);
    font-weight: 600;
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.data-table td {
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    color: var(--text-main);
    font-size: 0.8125rem;
}

.data-table tbody tr:hover {
    background-color: #f8fafc;
}

.text-truncate {
    max-width: 180px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.text-muted {
    color: var(--text-muted);
}

.text-sm {
    font-size: 0.75rem;
}

.italic {
    font-style: italic;
}

.epic-badge {
    background-color: #f1f5f9;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.75rem;
    border: 1px solid var(--border);
    font-weight: 600;
}

/* Thumbnail Button */
.btn-thumbnail {
    position: relative;
    display: inline-block;
    background: none;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px;
    cursor: pointer;
    overflow: hidden;
    transition: border-color 0.15s ease;
}

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

.table-thumbnail {
    width: 36px;
    height: 28px;
    object-fit: cover;
    border-radius: 3px;
    display: block;
    background-color: #e2e8f0;
}

.thumb-zoom-icon {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.4);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.btn-thumbnail:hover .thumb-zoom-icon {
    opacity: 1;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 2.5rem 1rem !important;
}

.empty-message {
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.25rem;
    background-color: #f8fafc;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
    gap: 0.75rem;
}

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

.pagination-links {
    display: flex;
    gap: 0.35rem;
    align-items: center;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 30px;
    height: 30px;
    padding: 0 0.45rem;
    border-radius: 4px;
    font-size: 0.775rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-main);
    background-color: #ffffff;
    border: 1px solid var(--border);
}

.page-link:hover:not(.disabled):not(.active) {
    background-color: var(--neutral-100);
}

.page-link.active {
    background-color: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    font-weight: 600;
}

.page-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #f1f5f9;
}

.page-link.ellipsis {
    border: none;
    background: none;
    color: var(--text-muted);
}

/* ==========================================================================
   Image Lightbox Modal (Sleek Interface)
   ========================================================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    backdrop-filter: blur(2px);
}

.modal-content {
    background-color: #ffffff;
    border-radius: 12px;
    border: 1px solid var(--border);
    width: 100%;
    max-width: 760px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.25rem;
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
}

.modal-subtitle {
    font-size: 0.725rem;
    color: var(--text-muted);
}

.btn-modal-close {
    background: none;
    border: none;
    font-size: 1.35rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
}
.btn-modal-close:hover {
    color: var(--text-main);
}

.modal-body {
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f1f5f9;
}

.modal-image-wrapper {
    max-height: 60vh;
    display: flex;
    justify-content: center;
}

#modal-full-img {
    max-width: 100%;
    max-height: 60vh;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07);
    background-color: #ffffff;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border);
    background-color: #f8fafc;
}

/* ==========================================================================
   Footer (Sleek Interface)
   ========================================================================== */

.app-footer {
    background-color: #ffffff;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0.85rem 1.5rem;
    text-align: center;
    font-size: 0.775rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 900px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .main-content {
        padding: 1rem 0.75rem;
    }

    .form-card, .panel {
        padding: 1.35rem 1rem;
    }

    .header-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .nav-links {
        width: 100%;
        justify-content: space-between;
    }

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

    .success-actions {
        flex-direction: column;
    }
}