/* WorkPlan Pro · Material Design 3 Theme System */
/* ============================================= */

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

:root[data-theme="material-dark"],
:root[data-theme="material-light"] {
    --font-m3: 'Roboto', 'Inter', sans-serif;
    --radius-xs: 4px;
    --radius-s: 8px;
    --radius-m: 12px;
    --radius-l: 16px;
    --radius-xl: 28px; /* Standard M3 Card Radius */
    
    /* Elevation Shadows (M3 Style) */
    --elevation-1: 0px 1px 2px 0px rgba(0, 0, 0, 0.30), 0px 1px 3px 1px rgba(0, 0, 0, 0.15);
    --elevation-2: 0px 1px 2px 0px rgba(0, 0, 0, 0.30), 0px 2px 6px 2px rgba(0, 0, 0, 0.15);
    --elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.15), 0px 1px 3px 0px rgba(0, 0, 0, 0.30);
}

/* MATERIAL DARK PALETTE */
:root[data-theme="material-dark"] {
    --bg: #1A1C1E;
    --surface: #1A1C1E;
    --surface-container-low: #1D2024;
    --surface-container: #212429;
    --surface-container-high: #2B2F33;
    
    --primary: #D0E4FF;
    --on-primary: #003258;
    --primary-container: #00497D;
    --on-primary-container: #D1E4FF;
    
    --secondary: #BEC9D9;
    --on-secondary: #28313C;
    --secondary-container: #3E4854;
    --on-secondary-container: #DAE4F5;
    
    --tertiary: #D6BEE4;
    --on-tertiary: #3B2948;
    --tertiary-container: #523F5F;
    --on-tertiary-container: #F2DAFF;

    --error: #FFB4AB;
    --on-error: #690005;
    
    --outline: #8D9199;
    --outline-variant: #43474E;
    
    /* WorkPlan Specific Mapping */
    --text: #E2E2E6;
    --muted: #C4C6D0;
    --panel: var(--surface-container);
    --panel-inner: var(--surface-container-high);
    --border: var(--outline-variant);
    --accent: var(--primary);
    --accent-grad: var(--primary);
    --accent-soft: rgba(208, 228, 255, 0.12);
    --topbar-bg: rgba(26, 28, 30, 0.9);
    --shadow: var(--elevation-2);
}

/* MATERIAL LIGHT PALETTE */
:root[data-theme="material-light"] {
    --bg: #FDFBFF;
    --surface: #FDFBFF;
    --surface-container-low: #F7F3FA;
    --surface-container: #F1EDF4;
    --surface-container-high: #EBE7EF;
    
    --primary: #0061A4;
    --on-primary: #FFFFFF;
    --primary-container: #D1E4FF;
    --on-primary-container: #001D36;
    
    --secondary: #535F70;
    --on-secondary: #FFFFFF;
    --secondary-container: #DAE4F5;
    --on-secondary-container: #101C2B;
    
    --tertiary: #6B5778;
    --on-tertiary: #FFFFFF;
    --tertiary-container: #F2DAFF;
    --on-tertiary-container: #251431;

    --error: #BA1A1A;
    --on-error: #FFFFFF;
    
    --outline: #73777F;
    --outline-variant: #C3C7CF;
    
    /* WorkPlan Specific Mapping */
    --text: #1A1C1E;
    --muted: #43474E;
    --panel: var(--surface-container);
    --panel-inner: var(--surface-container-high);
    --border: var(--outline-variant);
    --accent: var(--primary);
    --accent-grad: var(--primary);
    --accent-soft: rgba(0, 97, 164, 0.12);
    --topbar-bg: rgba(253, 251, 255, 0.92);
    --shadow: var(--elevation-1);
}

/* GLOBAL MATERIAL STYLES OVERRIDE */
:root[data-theme^="material"] body {
    font-family: var(--font-m3);
}

/* Main Layout Transitions */
:root[data-theme^="material"] body {
    transition: background-color 0.5s ease;
}

:root[data-theme^="material"] .wrap, 
:root[data-theme^="material"] .topbar,
:root[data-theme^="material"] .sidebar {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

:root[data-theme^="material"] .panel {
    border-radius: var(--radius-xl);
    border: none;
    background: var(--surface-container-low);
    box-shadow: var(--elevation-1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

:root[data-theme^="material"] .inner {
    border-radius: var(--radius-l);
    background: var(--surface-container);
    border: 1px solid var(--outline-variant);
}

/* Glassmorphism for Topbar */
:root[data-theme^="material"] .topbar {
    background: var(--topbar-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--outline-variant);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

:root[data-theme^="material"] .kpi-card {
    border-radius: var(--radius-l);
    background: var(--surface-container-high);
    border: 1px solid transparent;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
    box-shadow: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px 16px;
}

:root[data-theme^="material"] .kpi-card:hover {
    background: var(--secondary-container);
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
}

:root[data-theme^="material"] .kpi-label {
    letter-spacing: 0.5px;
    font-weight: 500;
}

:root[data-theme^="material"] .kpi-value {
    letter-spacing: -1px;
}

:root[data-theme^="material"] .btn {
    border-radius: var(--radius-xl); /* Fully rounded M3 buttons */
    padding: 12px 28px;
    font-weight: 500;
    letter-spacing: 0.1px;
    text-transform: none;
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    border: none;
    transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}

:root[data-theme^="material"] .btn:active {
    transform: scale(0.95);
}

:root[data-theme^="material"] .btn:hover {
    box-shadow: var(--elevation-2);
    filter: brightness(1.1);
}

:root[data-theme^="material"] .btn-primary,
:root[data-theme^="material"] .btn-start {
    background: var(--primary);
    color: var(--on-primary);
}

:root[data-theme^="material"] .btn.secondary {
    background: var(--secondary-container);
    color: var(--on-secondary-container);
    border: none;
}

:root[data-theme^="material"] .btn-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

:root[data-theme^="material"] .field > input,
:root[data-theme^="material"] .field > select,
:root[data-theme^="material"] textarea {
    border-radius: var(--radius-s);
    background: var(--surface-container-high);
    border: 1px solid var(--outline);
    padding: 14px 16px;
    font-size: 16px; /* Prevents auto-zoom on iOS */
}

:root[data-theme^="material"] .field > input:focus,
:root[data-theme^="material"] .field > select:focus {
    border-color: var(--primary);
    border-width: 2px;
    background: var(--surface);
}

/* SIDEBAR M3 ADAPTATION */
:root[data-theme^="material"] .sidebar {
    background: var(--surface-container-low);
    border-right: none;
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
    box-shadow: var(--elevation-1);
}

:root[data-theme^="material"] .sidebar-header {
    background: transparent;
    border-bottom: none;
    padding: 32px 16px 16px;
}

:root[data-theme^="material"] .nav-section-header {
    border-radius: var(--radius-xl);
    margin: 4px 12px;
    width: calc(100% - 24px);
    font-weight: 500;
    padding: 16px 20px;
}

:root[data-theme^="material"] .nav-section-header.active {
    background: var(--secondary-container);
    color: var(--on-secondary-container);
    border-left: none;
}

:root[data-theme^="material"] .sidebar-nav .nav-item {
    border-radius: var(--radius-xl);
    margin: 4px 12px 4px 16px;
    width: calc(100% - 32px);
    border-left: none;
    padding: 12px 20px;
}

:root[data-theme^="material"] .sidebar-nav .nav-item.active {
    background: var(--primary-container);
    color: var(--on-primary-container);
    border-left: none;
}

/* RESPONSIVE MOBILE ADJUSTMENTS */
@media (max-width: 767px) {
    :root[data-theme^="material"] .wrap {
        padding: 12px;
    }
    
    :root[data-theme^="material"] .panel {
        border-radius: var(--radius-l);
        padding: 16px;
        margin-bottom: 80px; /* Space for FAB or mobile reachability */
    }
    
    :root[data-theme^="material"] .kpi-grid {
        grid-template-columns: 1fr 1fr !important; /* Force 2 columns for KPIs */
        gap: 8px;
    }

    :root[data-theme^="material"] .kpi-card {
        padding: 12px 8px;
    }

    :root[data-theme^="material"] .kpi-value {
        font-size: 20px;
    }
    
    :root[data-theme^="material"] .grid-2 {
        grid-template-columns: 1fr !important;
    }
    
    :root[data-theme^="material"] .topbar {
        padding: 10px 12px;
    }

    :root[data-theme^="material"] .topbar-actions {
        order: 3;
        width: 100%;
        margin-top: 8px;
        justify-content: flex-end;
    }
    
    :root[data-theme^="material"] .welcome-card {
        padding: 32px 20px;
        border-radius: var(--radius-xl);
        width: 95%;
    }

    /* Mobile Table improvements */
    :root[data-theme^="material"] .table-wrap {
        border-radius: var(--radius-m);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    :root[data-theme^="material"] table {
        font-size: 13px;
    }
    
    /* Better spacing for mobile headers */
    :root[data-theme^="material"] .panel-head h2 {
        font-size: 18px;
        width: 100%;
    }
}

/* Premium Scrollbar for Material */
:root[data-theme^="material"] ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

:root[data-theme^="material"] ::-webkit-scrollbar-track {
    background: transparent;
}

:root[data-theme^="material"] ::-webkit-scrollbar-thumb {
    background: var(--outline-variant);
    border-radius: 10px;
    border: 3px solid transparent;
    background-clip: content-box;
}

:root[data-theme^="material"] ::-webkit-scrollbar-thumb:hover {
    background: var(--outline);
    background-clip: content-box;
}

/* Micro-animations and Section Transitions */
:root[data-theme^="material"] .app-section {
    animation: materialFadeIn 0.5s cubic-bezier(0.2, 0, 0, 1) forwards;
}

@keyframes materialFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Better Card Gradients */
/* Note: Using subtle surface tints instead of multi-color gradients for premium M3 feel */
:root[data-theme="material-dark"] .kpi-card {
    background: linear-gradient(180deg, var(--surface-container-high) 0%, var(--surface-container) 100%);
}

:root[data-theme="material-light"] .kpi-card {
    background: linear-gradient(180deg, #FFFFFF 0%, var(--surface-container-low) 100%);
}

/* Table Row Hover */
:root[data-theme^="material"] tr {
    transition: background-color 0.2s ease;
}

:root[data-theme^="material"] tbody tr:hover {
    background-color: var(--surface-container-high) !important;
}

/* Modal Enhancements */
:root[data-theme^="material"] .modal-card {
    border-radius: var(--radius-xl);
    border: none;
    background: var(--surface-container-low);
    box-shadow: var(--elevation-3);
    animation: materialModalIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes materialModalIn {
    from { transform: scale(0.9) translateY(20px); opacity: 0; }
    to { transform: scale(1) translateY(0); opacity: 1; }
}

/* Floating Action Button (FAB) */
:root[data-theme^="material"] .fab-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 500;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

:root[data-theme^="material"] .fab {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--primary-container);
    color: var(--on-primary-container);
    display: grid;
    place-items: center;
    box-shadow: var(--elevation-3);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
    border: none;
}

:root[data-theme^="material"] .fab:hover {
    box-shadow: var(--elevation-4);
    background: var(--primary);
    color: var(--on-primary);
    transform: scale(1.05);
}

/* Logo Animation */
:root[data-theme^="material"] .logo {
    animation: materialLogoBounce 3s infinite ease-in-out;
}

@keyframes materialLogoBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}