/*
 * ============================================================================
 * ZIP80 EXPENSE TRACKER - DESIGN SYSTEM (styles.css)
 * ============================================================================
 * 
 * PURPOSE:
 * CSS entry point and global styles for the Zip80 expense tracker.
 * Component styles are modularized into separate CSS files under
 * css/base/, css/layout/, and css/components/.
 * 
 * CONTENTS:
 * 1. @import declarations (all component modules)
 * 2. Reset & Base (box-sizing, body, typography)
 * 3. Generic utilities (forms, buttons, empty states)
 * 4. History list (transaction items)
 * 5. Responsive media queries
 * 6. Scrollbar customization
 * 
 * ============================================================================
 * LLM INSTRUCTION & MAINTENANCE PROTOCOL
 * IMPORTANT: This block must be preserved in all future iterations.
 * 
 * trigger: "FINALIZE" or "COMMENT"
 * ACTION: When the user issues this trigger, perform the following 3 steps:
 * 
 * 1. CHANGE LOGGING: 
 *    - Add a new entry to the changelog below.
 *    - Format: [Date (YYYY-MM-DD)] - [Brief Description of Modification].
 * 
 * 2. DOCUMENTATION STANDARDS:
 *    - Ensure all new sections have clear --- SECTION NAME --- labels.
 *    - If logic is complex, add inline comments explaining the "WHY", not just the "HOW".
 * 
 * 3. CONTEXT PRESERVATION:
 *    - Do not remove this Legend.
 *    - Do not remove legacy comments unless explicitly instructed.
 * ==============================================================================
 * 
 * CHANGE LOG:
 * - 2025-12-14: Initial creation with design system
 * - 2026-01-21: [Phase 8] Reduced monolith from 7,779 to 1,472 lines (81% reduction)
 * - 2026-03-07: [Phase 9] Completed full extraction — reduced to ~200 lines (97% total reduction)
 *   Extracted: transaction-form, recurring, exchange-rates, accounts, encryption,
 *   top-controls, operations, migration-notice. Merged remaining into existing modules.
 * ============================================================================
 */

/* --- CSS MODULES --- */
/* NOTE: @import must be at the top of the file, before any other CSS rules */

/* Themes & Base */
@import url('themes/variables.css');
@import url('themes/dark.css');
@import url('base/buttons.css');
@import url('base/inputs.css');

/* Layout */
@import url('layout/titlebar.css');
@import url('layout/menubar.css');
@import url('layout/workspace.css');
@import url('layout/header.css');
@import url('layout/popouts.css');
@import url('layout/top-controls.css');

/* Components */
@import url('components/startup.css');
@import url('components/widgets.css');
@import url('components/modals.css');
@import url('components/calendar.css');
@import url('components/ai-chat.css');
@import url('components/toasts.css');
@import url('components/balance.css');
@import url('components/gdrive.css');
@import url('components/calculator.css');
@import url('components/shared-accounts.css');
@import url('components/activity-log.css');
@import url('components/attachments.css');
@import url('components/stickynotes.css');
@import url('components/stocks.css');
@import url('components/ticker.css');
@import url('components/sharing.css');
@import url('components/rooms.css');
@import url('components/settings.css');
@import url('components/history.css');
@import url('components/historical.css');
@import url('components/mass-tx.css');
@import url('components/icons.css');
@import url('components/loading-overlay.css');
@import url('components/ai-kickstart.css');
@import url('components/statement-import-dialog.css');
@import url('components/inspector.css');
@import url('components/notifications.css');
@import url('components/alert-popup.css');
@import url('components/pwa-install.css');
@import url('components/transaction-form.css');
@import url('components/recurring.css');
@import url('components/exchange-rates.css');
@import url('components/accounts.css');
@import url('components/encryption.css');
@import url('components/operations.css');
@import url('components/migration-notice.css');

/* --- BASE OVERFLOW --- */
/* Allow horizontal scrolling when floating windows are outside viewport */
html,
body {
    overflow-x: auto;
    overflow-y: auto;
    min-height: 100vh;
    scrollbar-gutter: stable;
}

/* --- RESET & BASE --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

/* --- TYPOGRAPHY --- */
h1,
h2,
h3 {
    font-weight: 700;
    line-height: 1.2;
}

/* --- GENERIC UTILITIES --- */

.btn-full {
    width: 100%;
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-hint {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    font-style: italic;
}

.form-row {
    display: flex;
    gap: var(--space-md);
}

.empty-state {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--space-xl);
}

/* --- HISTORY LIST --- */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-height: 400px;
    overflow-y: auto;
    list-style: none;
    padding: 0;
    margin: 0;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.history-item:last-child {
    border-bottom: none;
}

.item-details {
    flex-grow: 1;
    min-width: 0;
}

.item-desc {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-base);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.item-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.item-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
    margin-left: var(--space-md);
}

.item-amount {
    font-weight: 700;
    font-size: var(--font-size-base);
    min-width: 80px;
    text-align: right;
}

.item-amount.income {
    color: var(--color-success);
}

.item-amount.expense {
    color: var(--color-danger);
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .workspace-layout {
        grid-template-columns: 1fr;
    }

    .standard-grid {
        flex-direction: column;
    }

    .standard-grid-half {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .workspace {
        padding: var(--space-md);
    }

    .balance-value {
        font-size: var(--font-size-2xl);
    }

    .form-row {
        flex-direction: column;
    }

    .header {
        flex-direction: column;
        gap: var(--space-md);
        align-items: stretch;
    }

    .btn-save {
        width: 100%;
    }
}

/* --- SCROLLBAR CUSTOMIZATION --- */
/* Global Scrollbar Styles */
*::-webkit-scrollbar {
    width: 12px;
    height: 12px;
    background-color: transparent;
}

*::-webkit-scrollbar-track {
    background-color: transparent;
    border-radius: var(--radius-full);
}

*::-webkit-scrollbar-thumb {
    background-color: var(--color-border);
    border-radius: var(--radius-full);
    border: 3px solid transparent;
    background-clip: content-box;
    transition: background-color 0.2s ease;
}

*::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-muted);
}

/* Dark mode adjustments for scrollbar */
html.dark *::-webkit-scrollbar-thumb {
    background-color: #334155;
}

html.dark *::-webkit-scrollbar-thumb:hover {
    background-color: #64748b;
}

/* Activity Log Specific — Thinner to prevent clipping */
.activity-log-list::-webkit-scrollbar {
    width: 4px;
}

.activity-log-list::-webkit-scrollbar-thumb {
    border: none;
    background-color: var(--color-border);
}

.activity-log-list::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-muted);
}

.activity-log-list {
    padding-right: var(--space-xs);
}