@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ==========================================
   GOOGLE MATERIAL DESIGN 3 DESIGN SYSTEM TOKENS
   ========================================== */
:root {
    /* M3 Palette (Deep Corporate Navy & Aviation VIP Gold) */
    --md-primary: #0F3C6F;              /* M3 Rich Navy */
    --md-on-primary: #FFFFFF;
    --md-primary-container: #E1EBFD;    /* Tonal light blue container */
    --md-on-primary-container: #001C38;
    
    --md-secondary: #C5A02E;            /* VIP Gold Accent */
    --md-on-secondary: #1F1500;
    --md-secondary-container: #FFF1C5;  /* Tonal gold container */
    --md-on-secondary-container: #2B1E00;
    
    --md-tertiary: #5B21B6;             /* Royal Purple */
    --md-on-tertiary: #FFFFFF;
    --md-tertiary-container: #FAF5FF;
    --md-on-tertiary-container: #2E1065;
    
    --md-surface: #F8F9FA;              /* Modern Crisp Light Surface */
    --md-surface-dim: #F1F3F5;
    --md-surface-bright: #FFFFFF;
    --md-surface-container: #FFFFFF;    /* Clean M3 Card container */
    --md-surface-container-high: #F1F3F9;
    --md-surface-container-highest: #E2E8F0;
    
    --md-on-surface: #191C20;
    --md-on-surface-variant: #43474E;
    
    --md-outline: #73777F;              /* High contrast border lines */
    --md-outline-variant: #E2E8F0;      /* Soft division lines */
    
    --md-error: #BA1A1A;                /* Crimson Red */
    --md-on-error: #FFFFFF;
    --md-error-container: #FFDAD6;
    --md-on-error-container: #410002;

    /* Legacy color map adapted for M3 */
    --primary: var(--md-primary);
    --primary-light: var(--md-primary-container);
    --accent: var(--md-secondary);
    --accent-hover: #A07F1B;
    --bg-main: var(--md-surface);
    --bg-card: var(--md-surface-container);
    --text-main: var(--md-on-surface);
    --text-muted: var(--md-on-surface-variant);
    --border-color: var(--md-outline-variant);

    /* M3 Status Map */
    --status-open: var(--md-error);
    --status-assigned: #0284C7;         /* Sky Blue */
    --status-standby: #D97706;          /* Amber Gold */
    --status-closed: #16A34A;           /* Emerald Green */

    /* Typography */
    --font-outfit: 'Outfit', 'Inter', -apple-system, sans-serif;
    --font-inter: 'Inter', -apple-system, sans-serif;

    /* M3 Rounded Shapes */
    --shape-none: 0px;
    --shape-extra-small: 4px;
    --shape-small: 8px;
    --shape-medium: 12px;
    --shape-large: 16px;
    --shape-extra-large: 28px;          /* Modals / Large Dialogs */
    --shape-full: 100px;                /* M3 Pill Buttons & Badges */

    /* M3 Elevations (Tonal + Light Soft Shadows) */
    --elevation-1: 0px 1px 3px 1px rgba(0,0,0,0.04), 0px 1px 2px 0px rgba(0,0,0,0.08);
    --elevation-2: 0px 2px 6px 2px rgba(0,0,0,0.04), 0px 1px 2px 0px rgba(0,0,0,0.08);
    --elevation-3: 0px 4px 8px 3px rgba(0,0,0,0.05), 0px 1px 3px 0px rgba(0,0,0,0.1);

    --transition-m3: all 0.25s cubic-bezier(0.2, 0, 0, 1);
}

/* ==========================================
   GLOBAL RESET & BASE LAYOUT
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--md-surface);
    color: var(--md-on-surface);
    font-family: var(--font-inter);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    font-size: 14px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-outfit);
    font-weight: 700;
    color: var(--md-primary);
}

/* ==========================================
   M3 TOP APP BAR & RESPONSIVE MENU
   ========================================== */
.app-header {
    background-color: var(--md-surface-bright);
    color: var(--md-on-surface);
    height: 64px;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--md-outline-variant);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition-m3);
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: transform var(--transition-m3), opacity var(--transition-m3);
}

.brand-section:hover {
    transform: scale(1.02);
    opacity: 0.95;
}

.brand-section i {
    color: var(--md-secondary);
    font-size: 22px;
}

.brand-logo {
    height: 26px;
    width: auto;
    object-fit: contain;
    border-radius: var(--shape-extra-small);
}

.brand-title {
    font-family: var(--font-outfit);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.brand-title span {
    color: var(--md-secondary);
}

/* Hamburger Hidden Elements */
.menu-toggle-checkbox {
    display: none;
}

.menu-toggle-label {
    display: flex; /* Always display hamburger menu */
    cursor: pointer;
    font-size: 20px;
    color: var(--md-on-surface);
    padding: 10px;
    border-radius: var(--shape-full);
    transition: var(--transition-m3);
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

.menu-toggle-label:hover {
    background-color: var(--md-surface-container-high);
}

/* M3 Rounded Navigation Links Dropdown Card (Global Hamburger Menu) */
.nav-links {
    display: none; /* Hidden by default, toggled via checkbox */
    position: absolute;
    top: 64px;
    right: 24px;
    background-color: var(--md-surface-bright);
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--shape-large); /* 16px rounded */
    box-shadow: var(--elevation-3);
    width: 280px;
    z-index: 101;
    animation: menuFadeDown 0.25s cubic-bezier(0.2, 0, 0, 1) both;
}

.menu-toggle-checkbox:checked ~ .nav-links {
    display: flex;
}

.nav-link {
    color: var(--md-on-surface-variant);
    text-decoration: none;
    font-weight: 500;
    font-size: 13px;
    transition: var(--transition-m3);
    padding: 12px 20px;
    border-radius: var(--shape-medium);
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.nav-link:hover {
    background-color: var(--md-surface-container-high);
    color: var(--md-on-surface);
}

.nav-link.active {
    background-color: var(--md-primary-container);
    color: var(--md-on-primary-container);
    font-weight: 700;
}

/* M3 Collapsible Dropdown Submenu */
.nav-dropdown {
    width: 100%;
}

.nav-dropdown-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-radius: var(--shape-medium);
    color: var(--md-on-surface-variant);
    font-weight: 500;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: var(--transition-m3);
}

.nav-dropdown-summary::-webkit-details-marker {
    display: none;
}

.nav-dropdown-summary:hover {
    background-color: var(--md-surface-container-high);
    color: var(--md-on-surface);
}

.nav-dropdown-summary span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dropdown-arrow {
    transition: transform 0.2s ease;
    font-size: 11px;
}

.nav-dropdown[open] .dropdown-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-left: 20px;
    padding-left: 10px;
    border-left: 1.5px solid var(--md-outline-variant);
    margin-top: 4px;
    margin-bottom: 4px;
}

.nav-dropdown-content .nav-link {
    padding: 10px 16px;
    font-size: 12.5px;
    gap: 10px;
}

/* ==========================================
   APP CONTAINER & MODERN M3 CARDS
   ========================================== */
.app-container {
    max-width: 1200px;
    margin: 24px auto;
    padding: 0 20px;
}

/* M3 Outlined Card is the signature sleek container */
.card {
    background: var(--md-surface-container);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--shape-large);
    padding: 24px;
    transition: var(--transition-m3);
    position: relative;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--elevation-1);
    border-color: var(--md-outline);
}

.card-title-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--md-outline-variant);
    padding-bottom: 14px;
    margin-bottom: 20px;
}

/* ==========================================
   KPI TONAL CARDS (M3 STYLE)
   ========================================== */
.kpi-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--md-surface-container);
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--shape-large);
    padding: 18px 20px;
    transition: var(--transition-m3);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 90px;
}

.kpi-card:hover {
    background: var(--md-surface-container-high);
    border-color: var(--md-outline);
}

/* Highly modern tonal container styles for KPIs in M3 */
.kpi-card.kpi-open { 
    background-color: #FFF5F5; 
    border-color: #FFD2D2;
}
.kpi-card.kpi-open .kpi-value { color: var(--md-error); }

.kpi-card.kpi-assigned { 
    background-color: #F0F7FF; 
    border-color: #CADAFF;
}
.kpi-card.kpi-assigned .kpi-value { color: #0284C7; }

.kpi-card.kpi-standby { 
    background-color: #FEFDF0; 
    border-color: #FBEFBC;
}
.kpi-card.kpi-standby .kpi-value { color: #D97706; }

.kpi-card.kpi-closed { 
    background-color: #F0FDF4; 
    border-color: #CFF7D3;
}
.kpi-card.kpi-closed .kpi-value { color: #16A34A; }

.kpi-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--md-on-surface-variant);
}

.kpi-value {
    font-family: var(--font-outfit);
    font-size: 32px;
    font-weight: 800;
    color: var(--md-primary);
    margin-top: 2px;
    line-height: 1.1;
}

/* ==========================================
   FORM CONTROLS & OUTLINED TEXT FIELDS (M3)
   ========================================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: var(--md-on-surface);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--md-outline);
    border-radius: var(--shape-small);
    font-family: var(--font-inter);
    font-size: 14px;
    color: var(--md-on-surface);
    background-color: var(--md-surface-bright);
    transition: var(--transition-m3);
}

.form-control:focus {
    outline: none;
    border-color: var(--md-primary);
    border-width: 2px;
    padding: 11px 15px; /* Adjust padding to avoid height jumps with 2px borders */
}

.form-control:disabled {
    background-color: var(--md-surface-dim);
    color: var(--md-on-surface-variant);
    border-color: var(--md-outline-variant);
    cursor: not-allowed;
}

/* Dynamic Drag and Drop Upload Zone */
.file-upload-zone {
    width: 100%;
    border: 2px dashed var(--md-outline);
    border-radius: var(--shape-medium);
    padding: 24px;
    text-align: center;
    background: var(--md-surface-dim);
    cursor: pointer;
    transition: var(--transition-m3);
}

.file-upload-zone:hover {
    border-color: var(--md-primary);
    background: var(--md-primary-container);
}

.file-upload-zone i {
    font-size: 36px;
    color: var(--md-on-surface-variant);
    margin-bottom: 8px;
    transition: var(--transition-m3);
}

.file-upload-zone:hover i {
    color: var(--md-primary);
}

/* ==========================================
   BUTTONS (M3 PILL SHAPED)
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: var(--shape-full); /* Fully rounded pill shape */
    font-family: var(--font-outfit);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: none;
    transition: var(--transition-m3);
    text-decoration: none;
}

.btn:active {
    transform: scale(0.95);
}

/* M3 Filled Button */
.btn-primary {
    background-color: var(--md-primary);
    color: var(--md-on-primary);
}

.btn-primary:hover {
    background-color: var(--md-primary-container);
    color: var(--md-on-primary-container);
}

/* M3 Secondary/Tonal Button */
.btn-secondary {
    background-color: var(--md-surface-container-high);
    color: var(--md-on-surface);
    border: 1px solid var(--md-outline-variant);
}

.btn-secondary:hover {
    background-color: var(--md-surface-container-highest);
}

/* Accent VIP Gold M3 Button */
.btn-accent {
    background-color: var(--md-secondary);
    color: var(--md-on-secondary);
}

.btn-accent:hover {
    background-color: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
}

/* Tonal Colored Action Buttons */
.btn-success {
    background-color: #E6FFFA;
    color: #16A34A;
    border: 1px solid #B2F5EA;
}
.btn-success:hover {
    background-color: #B2F5EA;
}

.btn-warning {
    background-color: #FFFDF5;
    color: #D97706;
    border: 1px solid #FBEFBC;
}
.btn-warning:hover {
    background-color: #FBEFBC;
}

.btn-danger {
    background-color: var(--md-error-container);
    color: var(--md-on-error-container);
}
.btn-danger:hover {
    background-color: #FFC0BD;
}

.btn-purple {
    background-color: var(--md-tertiary-container);
    color: var(--md-on-tertiary-container);
}
.btn-purple:hover {
    background-color: #E9D5FF;
}

/* ==========================================
   OUTLINED TABLES (M3)
   ========================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--md-outline-variant);
    border-radius: var(--shape-large);
    background: var(--md-surface-container);
    margin-bottom: 24px;
}

.table-custom {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table-custom th {
    background: var(--md-surface-container-high);
    padding: 16px 20px;
    font-family: var(--font-outfit);
    font-weight: 700;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--md-on-surface-variant);
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--md-outline-variant);
}

.table-custom td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--md-outline-variant);
    vertical-align: middle;
}

.table-custom tr:last-child td {
    border-bottom: none;
}

.table-custom tr:hover td {
    background-color: var(--md-surface-container-high);
}

/* ==========================================
   PILL BADGES (M3 BADGE SYSTEM)
   ========================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 12px;
    border-radius: var(--shape-full); /* Fully rounded pill */
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid transparent;
}

.badge-open {
    background-color: var(--md-error-container);
    color: var(--md-on-error-container);
}

.badge-assigned {
    background-color: #E0F2FE;
    color: #0369A1;
}

.badge-standby {
    background-color: #FEF3C7;
    color: #B45309;
}

.badge-closed {
    background-color: #DCFCE7;
    color: #15803D;
}

.badge-purple {
    background-color: var(--md-tertiary-container);
    color: var(--md-on-tertiary-container);
}

/* ==========================================
   MODALS (ROUNDED 28PX EXTRA-LARGE)
   ========================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 24px;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-m3);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--md-surface-container);
    border-radius: var(--shape-extra-large); /* Signature 28px rounded corners */
    max-width: 520px;
    width: 100%;
    padding: 32px;
    box-shadow: var(--elevation-3);
    transform: scale(0.9);
    transition: var(--transition-m3);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--md-outline-variant);
    padding-bottom: 16px;
    margin-bottom: 24px;
}

.modal-title {
    font-size: 20px;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--md-on-surface-variant);
    cursor: pointer;
    line-height: 1;
    width: 40px;
    height: 40px;
    border-radius: var(--shape-full);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-m3);
}

.modal-close:hover {
    background-color: var(--md-surface-container-high);
    color: var(--md-on-surface);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    border-top: 1px solid var(--md-outline-variant);
    padding-top: 20px;
    margin-top: 24px;
}

/* Photo Thumbnail Viewer */
.thumbnail-view {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--md-primary);
    font-weight: 700;
    font-size: 12px;
    background: var(--md-primary-container);
    padding: 6px 12px;
    border-radius: var(--shape-full);
    cursor: pointer;
    border: none;
    transition: var(--transition-m3);
}

.thumbnail-view:hover {
    background: #CBDCFF;
}

/* Modern Notification Alert Boxes */
.alert-box {
    padding: 16px;
    border-radius: var(--shape-medium);
    border: 1px solid;
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 500;
}

.alert-box-success {
    background-color: #ECFDF5;
    border-color: #A7F3D0;
    color: #065F46;
}

.alert-box-danger {
    background-color: var(--md-error-container);
    border-color: #FCA5A5;
    color: #991B1B;
}

.alert-box-info {
    background-color: #EFF6FF;
    border-color: #BFDBFE;
    color: #1E40AF;
}

.alert-box-warning {
    background-color: #FFFBEB;
    border-color: #FDE68A;
    color: #92400E;
}

/* Animation utilities */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(0.98); opacity: 0.85; }
    100% { transform: scale(1); opacity: 1; }
}

.spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==========================================
   RESPONSIVE DESIGN (HAMBURGER & MOBILE DRAWER)
   ========================================== */
@media (max-width: 768px) {
    .nav-links {
        left: 0;
        right: 0;
        width: 100%;
        border-radius: 0;
        border-left: none;
        border-right: none;
        padding: 16px 24px;
        gap: 10px;
        border-bottom: 1px solid var(--md-outline-variant);
        box-shadow: var(--elevation-2);
    }

    .kpi-container {
        grid-template-columns: 1fr;
        gap: 12px;
    }

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

    .card {
        padding: 16px;
    }
}

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