:root {
    --bg-color: var(--tg-theme-bg-color, #f5f5f7);
    --secondary-bg: var(--tg-theme-secondary-bg-color, #ffffff);
    --text-color: var(--tg-theme-text-color, #1d1d1f);
    --hint-color: var(--tg-theme-hint-color, #86868b);
    --primary-color: var(--tg-theme-button-color, #007aff);
    --primary-text: var(--tg-theme-button-text-color, #ffffff);
    
    /* Custom Tokens */
    --border-color: rgba(134, 134, 139, 0.15);
    --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --card-bg: var(--secondary-bg);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: var(--tg-theme-bg-color, #000000);
        --secondary-bg: var(--tg-theme-secondary-bg-color, #1c1c1e);
        --text-color: var(--tg-theme-text-color, #f5f5f7);
        --hint-color: var(--tg-theme-hint-color, #86868b);
        --border-color: rgba(255, 255, 255, 0.1);
        --shadow-soft: 0 4px 24px rgba(0, 0, 0, 0.2);
        --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.3);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.app-container {
    padding: 16px;
    max-width: 600px;
    margin: 0 auto;
}

/* Typography */
.section-title {
    font-size: 17px;
    font-weight: 600;
    margin: 28px 0 12px 4px;
    color: var(--text-color);
    letter-spacing: -0.3px;
}

/* Cards */
.card {
    background-color: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-color);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

/* Forms */
.form-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.flex-1 { flex: 1; min-width: 120px; }
.flex-2 { flex: 2; min-width: 0; }

.form-group {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 13px;
    color: var(--hint-color);
    margin-bottom: 6px;
    font-weight: 500;
}

.tg-input {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 15px;
    outline: none;
    transition: all 0.3s ease;
    appearance: none;
    font-weight: 500;
}

.tg-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
    background-color: var(--card-bg);
}

.readonly-field {
    background-color: rgba(134, 134, 139, 0.05) !important;
    color: var(--hint-color) !important;
    pointer-events: none;
    border: 1px dashed var(--border-color);
}

/* Custom Select */
.custom-select-wrapper {
    position: relative;
    width: 100%;
}
.custom-select-wrapper.flex-1 {
    flex: 1; min-width: 120px;
}
.custom-select-wrapper.flex-2 {
    flex: 2; min-width: 0;
}
.custom-select {
    width: 100%;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    user-select: none;
}
.custom-select.open {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
    background-color: var(--card-bg);
}
.custom-select::after {
    content: "▼";
    font-size: 10px;
    color: var(--hint-color);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.custom-select.open::after {
    transform: rotate(-180deg);
}
.custom-options {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 100%;
    width: max-content;
    max-width: 280px;
    box-sizing: border-box;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    z-index: 1000;
    max-height: 220px;
    overflow-y: auto;
    overflow-x: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.98);
    transform-origin: top center;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 6px;
}
.custom-options.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.staff-row-top .custom-select-wrapper:last-of-type .custom-options {
    left: auto;
    right: 0;
}

/* Custom Scrollbar for Options */
.custom-options::-webkit-scrollbar {
    width: 6px;
}
.custom-options::-webkit-scrollbar-track {
    background: transparent;
}
.custom-options::-webkit-scrollbar-thumb {
    background-color: var(--hint-color);
    border-radius: 10px;
    opacity: 0.5;
}

.custom-option {
    padding: 12px 14px;
    color: var(--text-color);
    font-size: 15px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    margin-bottom: 2px;
}
.custom-option:last-child {
    margin-bottom: 0;
}
.custom-option:hover {
    background: rgba(0, 122, 255, 0.08);
    transform: translateX(2px);
}
.custom-option.selected {
    background: rgba(0, 122, 255, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}
.custom-select-wrapper.readonly-wrapper .custom-select {
    background-color: rgba(134, 134, 139, 0.05) !important;
    color: var(--hint-color) !important;
    pointer-events: none;
    border: 1px dashed var(--border-color);
}
.custom-select-wrapper.readonly-wrapper .custom-select::after {
    display: none;
}

/* Badges */
.badge {
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
    letter-spacing: 0.2px;
}
.badge-arrival {
    background-color: rgba(52, 199, 89, 0.15);
    color: #34c759;
}
.badge-remainder {
    background-color: rgba(0, 122, 255, 0.15);
    color: #007aff;
}
.badge-hours {
    background-color: rgba(255, 149, 0, 0.15);
    color: #ff9500;
}

/* Inventory Items */
.inventory-item {
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}
.inventory-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.item-name {
    font-weight: 600;
    font-size: 16px;
    margin-bottom: 12px;
    color: var(--text-color);
}

.item-fields {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}
.item-fields .tg-input {
    text-align: center;
    font-weight: 600;
}

/* Staff Rows */
.staff-row {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    background: var(--bg-color);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.staff-row:focus-within {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-soft);
}

.staff-row-top {
    display: flex;
    gap: 8px;
    align-items: center;
}
.staff-row-bottom {
    display: flex;
    gap: 12px;
    align-items: center;
}

.time-inputs {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.time-inputs span {
    font-weight: 500;
    color: var(--hint-color);
}

.remove-staff {
    color: #ff3b30;
    background: rgba(255, 59, 48, 0.1);
    border: none;
    font-size: 18px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.remove-staff:active {
    transform: scale(0.9);
    background: rgba(255, 59, 48, 0.2);
}

/* Buttons */
.btn {
    width: 100%;
    padding: 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    text-align: center;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px dashed var(--border-color);
}

.btn-outline:hover {
    background-color: rgba(0, 122, 255, 0.05);
    border-color: var(--primary-color);
}

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

/* Toggle Buttons (Radio alternative) */
.toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    background: transparent;
    padding: 12px 8px;
    font-size: 14px;
    white-space: nowrap;
}

.toggle-btn.active {
    background-color: var(--primary-color);
    color: var(--primary-text);
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

/* File Upload Preview */
.file-upload-wrapper {
    margin-top: 8px;
}

.image-preview {
    margin-top: 12px;
    width: 100%;
    max-height: 200px;
    border-radius: var(--radius-md);
    overflow: hidden;
    display: none;
    background: #000;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Loader */
.loader-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 60vh;
    color: var(--hint-color);
}

.spinner {
    width: 44px;
    height: 44px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s cubic-bezier(0.4, 0, 0.2, 1) infinite;
    margin-bottom: 20px;
}

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

/* ---------------------------
   ADMIN & ANALYTICS STYLES
   --------------------------- */

.tabs {
    display: flex;
    background: var(--card-bg);
    padding: 8px;
    gap: 6px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    flex: 1 0 auto;
    padding: 10px 6px;
    text-align: center;
    background: transparent;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 13px;
    color: var(--hint-color);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.tab.active {
    background: var(--primary-color);
    color: var(--primary-text);
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.tab-content {
    display: none;
    padding: 20px 16px;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.header {
    margin-bottom: 24px;
}

.header h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}

.header p {
    font-size: 14px;
    color: var(--hint-color);
}

/* Analytics Cards */
.analytics-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.analytics-card {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    padding: 16px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    cursor: pointer;
}

.analytics-card:active {
    transform: scale(0.97);
}

.analytics-avatar {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-color), #5ac8fa);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 20px;
    margin-right: 16px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

.analytics-name {
    font-weight: 600;
    color: var(--text-color);
    font-size: 16px;
}

.analytics-info {
    flex: 1;
    min-width: 0;
}

.analytics-stats {
    display: flex;
    flex-direction: row;
    gap: 6px;
    align-items: center;
    flex-shrink: 0;
}

.tg-button {
    background-color: var(--primary-color);
    color: var(--primary-text);
    border: none;
    border-radius: var(--radius-md);
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    width: 100%;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.2);
}

.tg-button:active {
    transform: scale(0.98);
    box-shadow: 0 2px 6px rgba(0, 122, 255, 0.2);
}

/* Modal Overlay */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: flex-end;
    justify-content: center;
}

.modal-overlay.active { 
    display: flex; 
    animation: fadeInOverlay 0.3s ease;
}

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

.modal-content {
    background: var(--card-bg);
    width: 100%;
    max-height: 85vh;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: 24px;
    overflow-y: auto;
    box-shadow: 0 -10px 40px rgba(0,0,0,0.1);
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

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

.modal-header h3 { 
    margin: 0; 
    font-size: 20px; 
    color: var(--text-color); 
    font-weight: 700;
}

.close-btn {
    background: var(--bg-color);
    width: 36px; height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center; justify-content: center;
    cursor: pointer;
    color: var(--hint-color);
    font-size: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}
.close-btn:active {
    background: rgba(0,0,0,0.05);
    transform: scale(0.9);
}

/* Admin Specific */
.settings-group h3 {
    font-size: 15px;
    color: var(--text-color);
    margin-bottom: 12px;
    font-weight: 600;
}

/* Viewer styles */
#report-viewer-container {
    margin-top: 20px;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-soft);
}
.viewer-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}
.viewer-row:last-child {
    border-bottom: none;
}
.v-item { font-weight: 500; color: var(--text-color); }
.v-data { color: var(--primary-color); font-weight: 600; }
.v-comment { font-size: 0.85em; color: var(--hint-color); }
.inv-stats {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
}
.badge-shifts {
    background-color: rgba(52, 199, 89, 0.15);
    color: #34c759;
}