/* ==========================================================================
   INVOICABLE - MAIN STYLESHEET
   ========================================================================== */

/* TABLE OF CONTENTS:
   1. Configuration & Variables
   2. Global Resets & Body
   3. Typography & Headers
   4. Toolbar & Navigation
   5. Form Elements & Inputs (Editable Fields)
   6. Table & Invoice Items
   7. PDF & Print Utilities
   8. Mobile & Responsive Styles
*/

/* ==========================================================================
   1. CONFIGURATION & VARIABLES
   ========================================================================== */

:root {
    /* --- Color Palette --- */
    --primary-color: #0053a6;           /* Main theme color */
    --primary-text-color: #ffffff;      /* Text on top of primary color */
    
    /* --- Backgrounds --- */
    --bg-body: #f3f4f6;                 /* Main page background */
    --bg-paper: #ffffff;                /* Invoice paper background */
    --bg-toolbar: #f8f9fa;              /* Toolbar background */
    --bg-toolbar-hover: #ffffff;        /* Toolbar item hover background */

    /* --- Text Colors --- */
    --text-main: #374151;               /* Standard text color */
    --text-muted: #6c757d;              /* Muted/Icon color */
    --text-placeholder: #adb5bd;        /* Placeholder text color */
    --text-secondary: #4b5563;          /* Secondary text color */

    /* --- Borders & Lines --- */
    --border-color: #e5e7eb;            /* Standard border */
    --border-hover: #d1d5db;            /* Border color on hover */
    --border-focus: #ced4da;            /* Border color on focus */

    /* --- Typography --- */
    --font-family-sans: 'Inter', sans-serif;
    --font-family-mono: 'Roboto Mono', monospace;
    
    /* --- Spacing & Sizing --- */
    --border-radius: 6px;               /* Standard border radius */
    --toolbar-height: 36px;             /* Height of toolbar items */
    --spacing-xs: 0.5px;                /* Letter spacing */
}

/* ==========================================================================
   2. GLOBAL RESETS & BODY
   ========================================================================== */

body {
    background-color: var(--bg-body);
    font-family: var(--font-family-sans);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased; /* Smooth fonts on MacOS */
}

/* Utility to prevent text selection (useful for UI elements) */
.unselectable {
    user-select: none;
}

/* ==========================================================================
   3. TYPOGRAPHY & HEADERS
   ========================================================================== */

.header-title {
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.header-label-lg {
    font-size: 0.9rem !important;
    letter-spacing: 0.5px;
}

/* Decorative banner line */
.header-banner {
    background-color: var(--primary-color) !important;
}

/* Helper for primary colored text */
.text-primary-custom {
    color: var(--primary-color);
}

/* Extra small text utility */
.x-small {
    font-size: 0.7rem;
    letter-spacing: var(--spacing-xs);
}

/* Monospace font application for numbers and data */
#pdf_element .item-price,
#pdf_element .item-quantity,
#pdf_element .item-amount,
#invoice_total,
#invoice_number,
#date {
    font-family: var(--font-family-mono);
    letter-spacing: -0.5px;
}

/* Date Picker Styling */
.date-picker-input {
    border: none;
    border-bottom: 1px dashed transparent;
    background: transparent;
    font-family: 'Roboto Mono', monospace;
    font-weight: 500;
    color: #212529;
    padding: 0;
    width: auto;
    display: inline-block;
    cursor: pointer;
    font-size: 1rem;
    line-height: inherit;
    text-align: right;
}

input[type="time"]::-webkit-calendar-picker-indicator,
input[type="date"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    opacity: 0.6;
}

.date-picker-input:hover {
    border-bottom-color: #ced4da;
    background-color: rgba(0,0,0,0.01);
}

.date-picker-input:focus {
    outline: none;
    box-shadow: none;
    border-bottom: 1px solid var(--primary-color);
    background-color: rgba(var(--primary-color), 0.05);
}

/* ==========================================================================
   4. TOOLBAR & NAVIGATION
   ========================================================================== */

.navbar-spacer {
    height: 80px;
    transition: height 0.3s ease;
}

/* Container for toolbar buttons/selects */
.toolbar-item {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-toolbar);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 0 10px;
    height: var(--toolbar-height);
    transition: all 0.2s ease;
}

.toolbar-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-toolbar-hover);
}

.toolbar-item i {
    font-size: 1rem;
    margin-right: 6px;
    color: var(--text-muted);
}

/* Styled select inputs inside the toolbar */
.toolbar-select {
    border: none;
    background: transparent;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0;
    cursor: pointer;
    outline: none;
    box-shadow: none !important;
    width: auto;
}

/* Circular Color Picker Wrapper */
.color-picker-wrapper {
    width: var(--toolbar-height);
    height: var(--toolbar-height);
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: transform 0.2s;
}

.color-picker-wrapper:hover {
    transform: scale(1.1);
    border-color: var(--border-hover);
}

/* Actual color input (hidden visually but accessible) */
.form-control-color {
    width: 150%;
    height: 150%;
    transform: translate(-25%, -25%);
    padding: 0;
    border: none;
    cursor: pointer;
}

/* ==========================================================================
   5. FORM ELEMENTS & INPUTS (EDITABLE FIELDS)
   ========================================================================== */

/* Contenteditable fields styling */
.editable-field {
    border-bottom: 1px dashed rgba(0, 0, 0, 0.3);
    padding: 1px 0;
    min-width: 30px;
    outline: none;
    transition: all 0.2s;
    cursor: text;
    line-height: 1.4;
}

.editable-field:hover {
    border-bottom-color: var(--border-focus);
    background-color: rgba(0, 0, 0, 0.01);
}

.editable-field:focus {
    border-bottom: 1px solid var(--primary-color);
    background-color: rgba(var(--primary-color), 0.05);
}

/* Placeholder behavior for empty editable fields */
.editable-field:empty:before {
    content: attr(data-placeholder);
    color: var(--text-placeholder);
    font-style: italic;
    font-weight: 400;
}

/* Prevents wrapping on specific fields until focused */
.text-nowrap-custom {
    white-space: nowrap;
    overflow: hidden;
}

.text-nowrap-custom:focus {
    white-space: normal;
    overflow: visible;
}

/* ==========================================================================
   6. TABLE & INVOICE ITEMS
   ========================================================================== */

.item-description {
    text-align: left;
}

/* Force center alignment for numeric columns */
.item-quantity,
.item-price,
.item-amount {
    text-align: center !important;
}

/* Inputs inside table cells */
.table input.form-control {
    border: none;
    background: transparent;
    box-shadow: none;
    padding: 0;
    font-weight: 500;
    font-size: 0.9rem;
}

.table input.form-control:focus {
    background: #f9fafb;
    box-shadow: inset 0 -1px 0 var(--primary-color);
}

/* Delete/Action button visibility */
.action-column button {
    opacity: 0.1;
    transition: opacity 0.2s;
}

tr:hover .action-column button {
    opacity: 1;
}

/* ==========================================================================
   7. PDF & PRINT UTILITIES
   ========================================================================== */

/* Prevents elements from being split across pages in PDF */
.break-inside-avoid {
    page-break-inside: avoid !important;
    break-inside: avoid !important;
    display: block;
}

tr {
    page-break-inside: avoid;
    break-inside: avoid;
}

/* Ensures the PDF container is always white */
#pdf_element {
    background-color: var(--bg-paper) !important;
}

.pdf-clean-mode {
    margin: 0 auto;
}

.pdf-clean-mode .editable-field {
    border-bottom: none !important;
    padding: 0 !important;
}

.pdf-clean-mode .editable-field:empty::before {
    content: "" !important; /* Remove placeholders in PDF */
}

.pdf-clean-mode .col-6 {
    width: 50% !important;
    max-width: 50% !important;
}

.pdf-clean-mode .col-6:last-child {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

/* ==========================================================================
   8. MOBILE & RESPONSIVE STYLES
   ========================================================================== */

@media (max-width: 768px) {
    .navbar-spacer {
        height: 150px;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
        margin-bottom: 0.5rem;
        width: 100%;
        justify-content: center;
    }

    .toolbar-actions {
        width: 100%;
        justify-content: center !important;
        flex-wrap: wrap;
        gap: 8px !important;
    }
    
    .header-title {
        font-size: 2rem;
    }

    .footer-actions {
        flex-direction: column !important;
        align-items: stretch !important; /* Full width buttons */
        border-radius: 16px !important;  /* Less rounded on mobile stack */
        gap: 12px !important;
        padding: 20px !important;
    }

    .footer-actions button {
        width: 100%;
    }
}