/**
 * GLOBAL LAYOUT SYSTEM
 * Unified layout, spacing, and alignment improvements
 * December 2025
 */

/* ==================== GLOBAL SPACING TOKENS ==================== */
:root {
    --layout-max-width: 1200px;
    --layout-wide-max-width: 1440px;
    --layout-gutter: 24px;
    --header-height: 64px;
    --sidebar-width: 88px;
    --total-width: calc(var(--layout-max-width) + var(--sidebar-width));
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --section-gap: 32px;
}

/* ==================== CENTERED APP SHELL ==================== */
.app-container {
    width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ==================== HEADER - CENTERED, NOT FULL WIDTH ==================== */
.app-bar {
    width: 100% !important;
    height: var(--header-height) !important;
    max-height: var(--header-height) !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    overflow: hidden !important;
}

.app-bar-content {
    max-width: var(--total-width) !important;
    width: 100% !important;
    margin: 0 auto !important;
    padding: 0 var(--layout-gutter) 0 var(--sidebar-width) !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    background: var(--primary, #1565C0) !important;
    border-radius: 0 !important;
}

.app-bar-leading {
    gap: 8px !important;
}

.app-title {
    font-size: 18px !important;
    font-weight: 600 !important;
}

.app-bar-actions {
    gap: 8px !important;
}

/* Reduce avatar/logo sizes in header */
.app-bar .avatar {
    width: 32px !important;
    height: 32px !important;
}

.app-bar img[src*="logo"],
.app-bar .main-logo {
    width: 40px !important;
    height: 40px !important;
    max-width: 40px !important;
    max-height: 40px !important;
    object-fit: cover !important;
    border-radius: 50% !important;
    flex-shrink: 0 !important;
}

.balance-chip,
.account-summary {
    padding: 6px 12px !important;
    font-size: 13px !important;
}

/* ==================== BODY SHELL - CENTERED CONTAINER ==================== */
.app-body {
    max-width: var(--total-width) !important;
    width: 100% !important;
    margin: 0 auto !important;
    display: flex !important;
    flex: 1 !important;
    position: relative !important;
}

/* ==================== NAVIGATION RAIL - NO GAP WITH CONTENT ==================== */
.navigation-rail {
    position: fixed !important;
    left: 50% !important;
    transform: translateX(calc(-1 * var(--total-width) / 2)) !important;
    top: var(--header-height) !important;
    bottom: 0 !important;
    width: var(--sidebar-width) !important;
    z-index: 100 !important;
}

/* ==================== MAIN CONTENT - FLUSH WITH SIDEBAR ==================== */
.main-content {
    max-width: var(--total-width) !important;
    width: 100% !important;
    margin-left: auto !important;
    margin-right: auto !important;
    padding: var(--layout-gutter) !important;
    padding-left: var(--sidebar-width) !important;
}

/* Centered content wrapper for pages without sidebar */
.content-centered {
    max-width: var(--layout-max-width);
    margin: 0 auto;
    padding: 0 var(--layout-gutter);
}

/* Full-width pages with centered content */
.page-container {
    max-width: var(--layout-max-width);
    margin: 0 auto;
    padding: var(--layout-gutter);
}

/* ==================== VERTICAL RHYTHM ==================== */
.view > section,
.view > .card,
.view > .panel {
    margin-bottom: var(--section-gap) !important;
}

.view > section:last-child,
.view > .card:last-child,
.view > .panel:last-child {
    margin-bottom: 0 !important;
}

/* Section spacing consistency */
.section-header {
    margin-bottom: var(--spacing-lg) !important;
}

.section-content {
    margin-bottom: var(--section-gap) !important;
}

/* ==================== SECTION BACKGROUNDS ==================== */
.section-elevated {
    background: var(--surface, #ffffff);
    border: 1px solid var(--divider, #e0e0e0);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--section-gap);
}

.section-subtle {
    background: rgba(0, 0, 0, 0.02);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--section-gap);
}

/* Dark mode section backgrounds */
@media (prefers-color-scheme: dark) {
    .section-elevated {
        background: rgba(255, 255, 255, 0.03);
        border-color: rgba(255, 255, 255, 0.08);
    }
    
    .section-subtle {
        background: rgba(255, 255, 255, 0.02);
    }
}

/* ==================== AI CHATBOT - RIGHT EDGE OF CONTENT BODY ==================== */
#aiAssistant,
.ai-assistant-container,
.chatbot-widget,
.assistant-container {
    position: fixed !important;
    right: calc((100vw - var(--total-width)) / 2 + var(--layout-gutter)) !important;
    bottom: var(--layout-gutter) !important;
}

/* Chatbot FAB button - aligned to content right edge */
.ai-assistant-fab,
.chatbot-fab,
#aiAssistantToggle,
.assistant-fab {
    position: fixed !important;
    right: calc((100vw - var(--total-width)) / 2 + var(--layout-gutter)) !important;
    bottom: var(--layout-gutter) !important;
    width: 56px !important;
    height: 56px !important;
    border-radius: 28px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

/* Chatbot expanded state - align with content */
.ai-assistant-panel,
.chatbot-panel,
.assistant-panel {
    right: calc((100vw - var(--total-width)) / 2 + var(--layout-gutter)) !important;
    bottom: calc(56px + var(--spacing-lg) + var(--layout-gutter)) !important;
    max-width: 380px !important;
    max-height: calc(100vh - 150px) !important;
}

/* ==================== GRID SYSTEM ==================== */
.grid-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--spacing-lg);
}

.col-span-1 { grid-column: span 1; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-9 { grid-column: span 9; }
.col-span-10 { grid-column: span 10; }
.col-span-11 { grid-column: span 11; }
.col-span-12 { grid-column: span 12; }

/* Two column layout helper */
.layout-two-column {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-lg);
    align-items: start;
}

.layout-two-column-equal {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

/* ==================== RESPONSIVE BREAKPOINTS ==================== */
@media (max-width: 1440px) {
    :root {
        --layout-max-width: 1140px;
    }
}

@media (max-width: 1280px) {
    .navigation-rail {
        left: 0 !important;
        transform: none !important;
    }
    
    .main-content {
        max-width: 100% !important;
        margin-left: 0 !important;
        padding-left: var(--sidebar-width) !important;
    }
    
    /* Chatbot falls back to viewport edge */
    #aiAssistant,
    .ai-assistant-container,
    .chatbot-widget,
    .assistant-container,
    .ai-assistant-fab,
    .chatbot-fab,
    #aiAssistantToggle,
    .assistant-fab {
        right: var(--layout-gutter) !important;
    }
    
    .ai-assistant-panel,
    .chatbot-panel,
    .assistant-panel {
        right: var(--layout-gutter) !important;
    }
}

@media (max-width: 1024px) {
    .layout-two-column {
        grid-template-columns: 1fr;
    }
    
    .layout-two-column > aside,
    .layout-two-column > .sidebar {
        order: -1;
    }
    
    .grid-12 {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .col-span-4,
    .col-span-3 {
        grid-column: span 3;
    }
    
    .col-span-6 {
        grid-column: span 6;
    }
}

@media (max-width: 768px) {
    :root {
        --layout-gutter: 16px;
        --header-height: 56px;
        --section-gap: 24px;
    }
    
    .navigation-rail {
        position: fixed !important;
        left: 0 !important;
        right: 0 !important;
        top: auto !important;
        bottom: 0 !important;
        transform: none !important;
        width: 100% !important;
        height: 80px !important;
        flex-direction: row !important;
    }
    
    .main-content {
        margin-left: 0 !important;
        padding: var(--layout-gutter) !important;
        padding-bottom: 100px !important;
        padding-left: var(--layout-gutter) !important;
    }
    
    .grid-12 {
        grid-template-columns: 1fr;
    }
    
    .col-span-1,
    .col-span-2,
    .col-span-3,
    .col-span-4,
    .col-span-5,
    .col-span-6 {
        grid-column: span 1;
    }
    
    .layout-two-column-equal {
        grid-template-columns: 1fr;
    }
    
    /* Chatbot mobile positioning - above bottom nav */
    #aiAssistant,
    .ai-assistant-container,
    .chatbot-widget,
    .assistant-container {
        right: var(--spacing-md) !important;
        bottom: 90px !important;
    }
    
    .ai-assistant-fab,
    .chatbot-fab,
    #aiAssistantToggle,
    .assistant-fab {
        right: var(--spacing-md) !important;
        bottom: 90px !important;
    }
}

@media (max-width: 480px) {
    :root {
        --layout-gutter: 12px;
        --spacing-lg: 16px;
    }
    
    .app-title {
        font-size: 16px !important;
    }
    
    .balance-chip,
    .account-summary {
        padding: 4px 8px !important;
        font-size: 12px !important;
    }
}

/* ==================== UTILITY CLASSES ==================== */
.mt-0 { margin-top: 0 !important; }
.mt-sm { margin-top: var(--spacing-sm) !important; }
.mt-md { margin-top: var(--spacing-md) !important; }
.mt-lg { margin-top: var(--spacing-lg) !important; }
.mt-xl { margin-top: var(--spacing-xl) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-sm { margin-bottom: var(--spacing-sm) !important; }
.mb-md { margin-bottom: var(--spacing-md) !important; }
.mb-lg { margin-bottom: var(--spacing-lg) !important; }
.mb-xl { margin-bottom: var(--spacing-xl) !important; }

.p-0 { padding: 0 !important; }
.p-sm { padding: var(--spacing-sm) !important; }
.p-md { padding: var(--spacing-md) !important; }
.p-lg { padding: var(--spacing-lg) !important; }
.p-xl { padding: var(--spacing-xl) !important; }

.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

.flex-center {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

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