/* ========================================
   GLOBAL STYLES & RESET
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Brand Colors */
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --secondary: #64748B;
    
    /* MCAP - Grayscale */
    --mcap-dark: #1F2937;      /* Client meetings - darkest */
    --mcap-medium: #6B7280;    /* Internal meetings */
    --mcap-light: #9CA3AF;     /* Project work */
    --mcap-minimal: #E5E7EB;   /* Other */
    
    /* TBS - Green shades */
    --tbs-dark: #065F46;       /* Client meetings - darkest */
    --tbs-medium: #059669;     /* Internal meetings */
    --tbs-light: #10B981;      /* Project work */
    --tbs-minimal: #D1FAE5;    /* Other */
    
    /* Moffitt - Blue shades */
    --moffitt-dark: #1E40AF;   /* Client meetings - darkest */
    --moffitt-medium: #3B82F6; /* Internal meetings */
    --moffitt-light: #60A5FA;  /* Project work */
    --moffitt-minimal: #DBEAFE; /* Other */
    
    /* Decimal - Purple shades */
    --decimal-dark: #6B21A8;   /* Client meetings */
    --decimal-medium: #9333EA; /* Internal meetings */
    --decimal-light: #A855F7;  /* Project work */
    --decimal-minimal: #F3E8FF; /* Other */
    
    /* Background & Text */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.6;
}

/* ========================================
   LANDING PAGE STYLES
   ======================================== */

.landing-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.container {
    width: 100%;
    max-width: 1200px;
    padding: var(--spacing-lg);
}

.header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    color: white;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
}

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content h2 {
    font-size: 3rem;
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.tagline {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    color: white;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.feature h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature p {
    font-size: 0.95rem;
    opacity: 0.9;
}

.cta {
    text-align: center;
}

.login-note {
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Demo Calendar on Landing Page */
.hero-visual {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.demo-calendar {
    width: 100%;
}

.calendar-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    color: var(--text-primary);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-sm);
}

.day-label {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    padding: var(--spacing-sm);
}

.calendar-day {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    min-height: 100px;
    background: var(--bg-primary);
}

.day-number {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.event {
    font-size: 0.7rem;
    padding: 4px 6px;
    border-radius: 4px;
    margin-bottom: 4px;
    color: white;
    font-weight: 500;
}

/* Event Type Colors */
.mcap-client { background: var(--mcap-dark); }
.mcap-internal { background: var(--mcap-medium); }
.mcap-project { background: var(--mcap-light); }
.mcap-other { background: var(--mcap-minimal); color: var(--text-primary); }

.tbs-client { background: var(--tbs-dark); }
.tbs-internal { background: var(--tbs-medium); }
.tbs-project { background: var(--tbs-light); }
.tbs-other { background: var(--tbs-minimal); color: var(--text-primary); }

.moffitt-client { background: var(--moffitt-dark); }
.moffitt-internal { background: var(--moffitt-medium); }
.moffitt-project { background: var(--moffitt-light); }
.moffitt-other { background: var(--moffitt-minimal); color: var(--text-primary); }

.other { background: var(--bg-tertiary); color: var(--text-secondary); }

.legend {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

.mcap-bg { background: var(--mcap-medium); }
.tbs-bg { background: var(--tbs-medium); }
.moffitt-bg { background: var(--moffitt-medium); }

.footer {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer a {
    color: white;
    text-decoration: none;
}

/* ========================================
   BUTTON STYLES
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-primary {
    background: white;
    color: var(--primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-icon {
    font-size: 1.2em;
}

/* ========================================
   DASHBOARD LAYOUT
   ======================================== */

.app-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
    background: var(--bg-secondary);
}

/* Sidebar */
.sidebar {
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
}

.sidebar-header {
    margin-bottom: var(--spacing-xl);
}

.sidebar-header .logo {
    justify-content: flex-start;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    margin-bottom: var(--spacing-sm);
}

.nav-item:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--primary);
    color: white;
}

.nav-icon {
    font-size: 1.25rem;
}

.sidebar-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 600;
    font-size: 0.9rem;
}

.user-email {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    padding: var(--spacing-xl);
    overflow-y: auto;
}

.dashboard-header {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    font-size: 1.75rem;
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

.date-range-picker {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.date-input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

/* Calendar View */
.calendar-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-lg);
}

.calendar-legend {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    height: fit-content;
}

.calendar-legend h3 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.legend-section-title {
    margin-top: var(--spacing-lg);
}

.legend-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.intensity-indicator {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.intensity-indicator.high { background: var(--mcap-dark); }
.intensity-indicator.medium { background: var(--mcap-medium); }
.intensity-indicator.low { background: var(--mcap-light); }
.intensity-indicator.minimal { background: var(--mcap-minimal); }

.calendar-main {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.calendar-grid-weekly {
    display: grid;
    gap: var(--spacing-md);
}

/* Timesheet View */
.timesheet-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.summary-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
}

.summary-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.summary-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.timesheet-breakdown {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.timesheet-breakdown h2 {
    margin-bottom: var(--spacing-lg);
}

.timesheet-table {
    width: 100%;
    border-collapse: collapse;
}

.timesheet-table th {
    text-align: left;
    padding: var(--spacing-md);
    border-bottom: 2px solid var(--border);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.timesheet-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.timesheet-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* Projects View */
.projects-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.projects-list {
    display: grid;
    gap: var(--spacing-md);
}

.project-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 1000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .app-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        display: none;
    }
    
    .calendar-container {
        grid-template-columns: 1fr;
    }
}