/* ==========================================
   MODERN APP THEME
   Stunning, fresh design for logged-in users
   ========================================== */

/* ==========================================
   1. CSS VARIABLES
   ========================================== */
:root {
    --app-primary: #667eea;
    --app-secondary: #764ba2;
    --app-accent: #f093fb;
    --app-success: #34c759;
    --app-warning: #ffc107;
    --app-danger: #ff3b30;
    --app-info: #4facfe;
    --app-gradient: linear-gradient(135deg, var(--app-primary) 0%, var(--app-secondary) 100%);
    --app-glow: rgba(102, 126, 234, 0.4);
    --app-glow-intense: rgba(102, 126, 234, 0.6);
}

/* ==========================================
   2. ENHANCED BACKGROUNDS
   ========================================== */
body[data-theme="dark"] {
    --bg-gradient-start: #0f0c29;
    --bg-gradient-mid: #302b63;
    --bg-gradient-end: #24243e;
    --nav-bg: rgba(15, 12, 41, 0.9);
    --main-bg: rgba(255, 255, 255, 0.03);
    --card-bg: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --border-color: rgba(255, 255, 255, 0.1);
    --particle-color: 102, 126, 234;
}

body[data-theme="light"] {
    --bg-gradient-start: #f5f7fa;
    --bg-gradient-mid: #e4e8ec;
    --bg-gradient-end: #dfe4ea;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --main-bg: rgba(255, 255, 255, 0.9);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --border-color: rgba(0, 0, 0, 0.08);
    --particle-color: 102, 126, 234;
}

#particles-canvas {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-mid) 50%, var(--bg-gradient-end) 100%) !important;
}

/* ==========================================
   3. MODERN NAVBAR
   ========================================== */
.navbar {
    background: var(--nav-bg) !important;
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border-bottom: 1px solid var(--border-color) !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15) !important;
    padding: 16px 0 !important;
    transition: all 0.4s ease;
}

.navbar-brand {
    font-weight: 700 !important;
    font-size: 1.4rem !important;
    letter-spacing: -0.5px;
    background: var(--app-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    font-weight: 500 !important;
    font-size: 0.95rem !important;
    padding: 10px 18px !important;
    border-radius: 12px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative;
}

body[data-theme="dark"] .nav-link:hover {
    background: rgba(102, 126, 234, 0.15) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--app-glow);
}

body[data-theme="light"] .nav-link:hover {
    background: rgba(102, 126, 234, 0.1) !important;
    transform: translateY(-2px);
}

.nav-link.active,
.nav-item.show .nav-link {
    background: var(--app-gradient) !important;
    color: white !important;
    -webkit-text-fill-color: white;
    box-shadow: 0 4px 15px var(--app-glow);
}

.dropdown-menu {
    background: var(--nav-bg) !important;
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid var(--border-color) !important;
    border-radius: 16px !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3) !important;
    padding: 12px !important;
    margin-top: 12px !important;
    animation: slideDown 0.3s ease;
}

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

.dropdown-item {
    border-radius: 10px !important;
    padding: 12px 16px !important;
    font-weight: 500 !important;
    transition: all 0.3s ease !important;
    margin: 2px 0 !important;
}

body[data-theme="dark"] .dropdown-item:hover {
    background: rgba(102, 126, 234, 0.2) !important;
    transform: translateX(5px);
}

body[data-theme="light"] .dropdown-item:hover {
    background: rgba(102, 126, 234, 0.1) !important;
    transform: translateX(5px);
}

/* ==========================================
   4. MAIN CONTENT AREA
   ========================================== */
.container main {
    background: var(--main-bg) !important;
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border-radius: 24px !important;
    padding: 40px !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15) !important;
    margin-top: 32px !important;
    margin-bottom: 32px !important;
    border: 1px solid var(--border-color) !important;
    position: relative;
    overflow: hidden;
}

.container main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--app-gradient);
    opacity: 0.8;
}

/* Page title styling */
h1 {
    font-weight: 800 !important;
    font-size: 2.5rem !important;
    letter-spacing: -1px;
    margin-bottom: 1.5rem !important;
}

body[data-theme="dark"] h1 {
    background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2, h3, h4, h5, h6 {
    font-weight: 700 !important;
    letter-spacing: -0.5px;
}

/* ==========================================
   5. MODERN CARDS
   ========================================== */
.card {
    background: var(--card-bg) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color) !important;
    border-radius: 20px !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1) !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    overflow: hidden;
    position: relative;
}

.card:hover {
    transform: translateY(-8px) !important;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2), 0 0 40px var(--app-glow) !important;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--app-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.card:hover::before {
    transform: scaleX(1);
}

.card-header {
    background: transparent !important;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 20px 24px !important;
    font-weight: 700 !important;
    font-size: 1.1rem !important;
}

.card-body {
    padding: 24px !important;
}

/* Colored border cards */
.card[style*="border-color"] {
    border-left-width: 4px !important;
}

/* ==========================================
   6. STAT CARDS (Dashboard)
   ========================================== */
.stat-card,
.card.border-start {
    position: relative;
    overflow: hidden;
}

.stat-card .card-body,
.card.border-start .card-body {
    position: relative;
    z-index: 1;
}

.stat-card::after,
.card.border-start::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

/* Stat values */
.fs-2, .fs-3 {
    font-weight: 800 !important;
    font-variant-numeric: tabular-nums;
}

body[data-theme="dark"] .fs-2,
body[data-theme="dark"] .fs-3 {
    background: var(--app-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================
   7. ENHANCED BUTTONS
   ========================================== */
.btn {
    font-weight: 600 !important;
    padding: 12px 24px !important;
    border-radius: 12px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--app-gradient) !important;
    border: none !important;
    box-shadow: 0 4px 20px var(--app-glow) !important;
}

.btn-primary:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 30px var(--app-glow-intense) !important;
}

.btn-success {
    background: linear-gradient(135deg, #34c759 0%, #2fb84d 100%) !important;
    border: none !important;
    box-shadow: 0 4px 20px rgba(52, 199, 89, 0.4) !important;
}

.btn-success:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 30px rgba(52, 199, 89, 0.6) !important;
}

.btn-danger {
    background: linear-gradient(135deg, #ff3b30 0%, #ff2d20 100%) !important;
    border: none !important;
    box-shadow: 0 4px 20px rgba(255, 59, 48, 0.4) !important;
}

.btn-danger:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 30px rgba(255, 59, 48, 0.6) !important;
}

.btn-warning {
    background: linear-gradient(135deg, #ffc107 0%, #ffb300 100%) !important;
    border: none !important;
    box-shadow: 0 4px 20px rgba(255, 193, 7, 0.4) !important;
    color: #000 !important;
}

.btn-warning:hover {
    transform: translateY(-3px) !important;
    box-shadow: 0 8px 30px rgba(255, 193, 7, 0.6) !important;
}

.btn-secondary,
.btn-outline-secondary {
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid var(--border-color) !important;
    backdrop-filter: blur(10px);
}

body[data-theme="dark"] .btn-secondary:hover,
body[data-theme="dark"] .btn-outline-secondary:hover {
    background: rgba(255, 255, 255, 0.2) !important;
    border-color: rgba(255, 255, 255, 0.3) !important;
}

.btn-sm {
    padding: 8px 16px !important;
    font-size: 0.875rem !important;
}

.btn-lg {
    padding: 16px 32px !important;
    font-size: 1.1rem !important;
}

/* ==========================================
   8. ENHANCED TABLES
   ========================================== */
.table {
    border-radius: 16px !important;
    overflow: hidden !important;
    border-collapse: separate !important;
    border-spacing: 0 !important;
}

body[data-theme="dark"] .table {
    background: rgba(255, 255, 255, 0.02) !important;
}

body[data-theme="light"] .table {
    background: rgba(255, 255, 255, 0.8) !important;
}

.table thead th {
    background: rgba(102, 126, 234, 0.1) !important;
    border-bottom: 2px solid var(--app-primary) !important;
    font-weight: 700 !important;
    font-size: 0.8rem !important;
    text-transform: uppercase !important;
    letter-spacing: 1px !important;
    padding: 16px !important;
}

body[data-theme="dark"] .table thead th {
    color: var(--app-accent) !important;
}

.table tbody tr {
    transition: all 0.3s ease !important;
    border-bottom: 1px solid var(--border-color) !important;
}

.table tbody tr:hover {
    transform: scale(1.01) !important;
}

body[data-theme="dark"] .table tbody tr:hover {
    background: rgba(102, 126, 234, 0.1) !important;
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.2) !important;
}

body[data-theme="light"] .table tbody tr:hover {
    background: rgba(102, 126, 234, 0.05) !important;
}

.table tbody td {
    padding: 16px !important;
    vertical-align: middle !important;
}

/* ==========================================
   9. BADGES
   ========================================== */
.badge {
    padding: 8px 14px !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
    font-size: 0.8rem !important;
    letter-spacing: 0.3px !important;
    transition: all 0.3s ease !important;
}

.badge:hover {
    transform: scale(1.05);
}

.badge.bg-primary {
    background: var(--app-gradient) !important;
    box-shadow: 0 2px 10px var(--app-glow);
}

.badge.bg-success {
    background: linear-gradient(135deg, #34c759 0%, #2fb84d 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, #ffc107 0%, #ffb300 100%) !important;
    color: #000 !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, #ff3b30 0%, #ff2d20 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%) !important;
}

.badge.bg-secondary {
    background: rgba(255, 255, 255, 0.15) !important;
    border: 1px solid var(--border-color);
}

/* Project color badges */
.badge[style*="background-color"] {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* ==========================================
   10. ALERTS
   ========================================== */
.alert {
    border: none !important;
    border-radius: 16px !important;
    padding: 20px 24px !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}

.alert-success {
    background: rgba(52, 199, 89, 0.15) !important;
}

.alert-success::before {
    background: var(--app-success);
}

body[data-theme="dark"] .alert-success {
    color: #6ef59b !important;
}

.alert-danger {
    background: rgba(255, 59, 48, 0.15) !important;
}

.alert-danger::before {
    background: var(--app-danger);
}

body[data-theme="dark"] .alert-danger {
    color: #ff9b96 !important;
}

.alert-warning {
    background: rgba(255, 193, 7, 0.15) !important;
}

.alert-warning::before {
    background: var(--app-warning);
}

.alert-info {
    background: rgba(79, 172, 254, 0.15) !important;
}

.alert-info::before {
    background: var(--app-info);
}

/* Active tracking alert */
.alert.alert-info.border-info,
.alert[style*="border-color: #0dcaf0"],
.alert[style*="border-color: #ffc107"] {
    border: none !important;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%) !important;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3) !important;
}

/* ==========================================
   11. FORM CONTROLS
   ========================================== */
.form-control,
.form-select {
    border-radius: 12px !important;
    padding: 14px 18px !important;
    font-size: 1rem !important;
    transition: all 0.3s ease !important;
}

body[data-theme="dark"] .form-control,
body[data-theme="dark"] .form-select {
    background: rgba(255, 255, 255, 0.05) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
    color: #fff !important;
}

body[data-theme="light"] .form-control,
body[data-theme="light"] .form-select {
    background: rgba(255, 255, 255, 0.9) !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--app-primary) !important;
    box-shadow: 0 0 0 4px var(--app-glow) !important;
    outline: none !important;
}

body[data-theme="dark"] .form-control:focus,
body[data-theme="dark"] .form-select:focus {
    background: rgba(255, 255, 255, 0.1) !important;
}

.form-label {
    font-weight: 600 !important;
    font-size: 0.9rem !important;
    margin-bottom: 8px !important;
    letter-spacing: 0.3px;
}

/* ==========================================
   12. MODALS
   ========================================== */
.modal-content {
    border-radius: 24px !important;
    overflow: hidden;
}

body[data-theme="dark"] .modal-content {
    background: rgba(15, 12, 41, 0.95) !important;
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5) !important;
}

body[data-theme="light"] .modal-content {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(30px);
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 0 30px 100px rgba(0, 0, 0, 0.2) !important;
}

.modal-header {
    border-bottom: 1px solid var(--border-color) !important;
    padding: 24px 28px !important;
    position: relative;
}

.modal-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 28px;
    right: 28px;
    height: 2px;
    background: var(--app-gradient);
    opacity: 0.5;
}

.modal-title {
    font-weight: 700 !important;
    font-size: 1.3rem !important;
}

.modal-body {
    padding: 28px !important;
}

.modal-footer {
    border-top: 1px solid var(--border-color) !important;
    padding: 20px 28px !important;
}

/* ==========================================
   13. FOOTER
   ========================================== */
.footer {
    background: var(--nav-bg) !important;
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border-top: 1px solid var(--border-color) !important;
    padding: 30px 0 !important;
    font-size: 0.9rem !important;
}

body[data-theme="dark"] .footer a {
    color: var(--app-info) !important;
    transition: color 0.3s ease;
}

body[data-theme="dark"] .footer a:hover {
    color: var(--app-accent) !important;
}

/* ==========================================
   14. PROGRESS BARS
   ========================================== */
.progress {
    height: 10px !important;
    border-radius: 50px !important;
    overflow: hidden;
}

body[data-theme="dark"] .progress {
    background: rgba(255, 255, 255, 0.1) !important;
}

.progress-bar {
    border-radius: 50px !important;
    background: var(--app-gradient) !important;
    transition: width 0.6s ease !important;
}

.progress-bar.bg-success {
    background: linear-gradient(135deg, #34c759 0%, #2fb84d 100%) !important;
}

.progress-bar.bg-danger {
    background: linear-gradient(135deg, #ff3b30 0%, #ff2d20 100%) !important;
}

.progress-bar.bg-warning {
    background: linear-gradient(135deg, #ffc107 0%, #ffb300 100%) !important;
}

/* ==========================================
   15. ANIMATIONS
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--app-glow);
    }
    50% {
        box-shadow: 0 0 40px var(--app-glow-intense);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

.card {
    animation: fadeInUp 0.5s ease backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }
.card:nth-child(5) { animation-delay: 0.5s; }
.card:nth-child(6) { animation-delay: 0.6s; }

/* Active tracking pulse */
.tracking-active {
    animation: glow 2s infinite ease-in-out;
}

/* ==========================================
   16. SCROLLBAR
   ========================================== */
body[data-theme="dark"] ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

body[data-theme="dark"] ::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

body[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--app-primary), var(--app-secondary));
    border-radius: 10px;
}

body[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--app-secondary), var(--app-accent));
}

/* ==========================================
   17. UTILITIES
   ========================================== */
.glass {
    background: var(--card-bg) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.gradient-text {
    background: var(--app-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glow-hover:hover {
    box-shadow: 0 0 40px var(--app-glow) !important;
}

/* ==========================================
   18. RESPONSIVE ADJUSTMENTS
   ========================================== */
@media (max-width: 768px) {
    .container main {
        padding: 20px !important;
        margin-top: 16px !important;
        border-radius: 16px !important;
    }
    
    .card {
        border-radius: 16px !important;
    }
    
    .btn {
        padding: 10px 20px !important;
    }
    
    h1 {
        font-size: 1.8rem !important;
    }
    
    .table thead th,
    .table tbody td {
        padding: 12px !important;
    }
}

@media (max-width: 480px) {
    .container main {
        padding: 16px !important;
    }
    
    .card-body {
        padding: 16px !important;
    }
    
    h1 {
        font-size: 1.5rem !important;
    }
}