/* 
   Finakka - Premium Free Invoice Generator
   Styles System
   Theme: Deep Corporate Indigo & Modern Slate
*/

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    --primary-light-hover: #c7d2fe;
    --secondary: #0f172a;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

body {
    background-color: #f6f8fb;
    color: var(--slate-800);
    font-family: var(--font-family);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

header {
    background: linear-gradient(135deg, var(--slate-900) 0%, #1e1b4b 100%);
    color: white;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-logo {
    background: linear-gradient(135deg, var(--primary) 0%, #818cf8 100%);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #ffffff, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-tag {
    font-size: 0.75rem;
    background-color: rgba(79, 70, 229, 0.2);
    color: #a5b4fc;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-weight: 600;
    border: 1px solid rgba(79, 70, 229, 0.3);
    margin-left: 0.5rem;
}

.header-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.header-link {
    color: var(--slate-300);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.header-link:hover {
    color: white;
}

/* App Main Grid */
.app-container {
    max-width: 1440px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: start;
}

/* Editor Pane & Cards */
.editor-pane {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.card {
    background: white;
    border: 1px solid var(--slate-200);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    padding: 1.75rem;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--slate-100);
    padding-bottom: 0.75rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--slate-900);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-title svg {
    color: var(--primary);
    width: 20px;
    height: 20px;
}

/* Form Controls */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.form-grid-full {
    grid-column: span 2;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--slate-700);
}

.form-input, .form-select, .form-textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--slate-300);
    background-color: white;
    border-radius: 8px;
    font-family: var(--font-family);
    font-size: 0.9rem;
    color: var(--slate-800);
    transition: var(--transition);
    outline: none;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

/* Logo Upload Custom Style */
.logo-uploader {
    border: 2px dashed var(--slate-300);
    border-radius: 10px;
    padding: 1.25rem;
    text-align: center;
    background-color: var(--slate-50);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    min-height: 120px;
}

.logo-uploader:hover {
    border-color: var(--primary);
    background-color: rgba(79, 70, 229, 0.02);
}

.logo-uploader svg {
    color: var(--slate-400);
    width: 28px;
    height: 28px;
    transition: var(--transition);
}

.logo-uploader:hover svg {
    color: var(--primary);
    transform: translateY(-2px);
}

.logo-uploader-text {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--slate-500);
}

.logo-uploader-text span {
    color: var(--primary);
    font-weight: 600;
}

.logo-input {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}

.logo-preview-container {
    display: none;
    position: relative;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
}

.logo-preview-image {
    max-height: 90px;
    max-width: 100%;
    object-fit: contain;
    border-radius: 6px;
}

.logo-remove-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    background-color: var(--danger);
    color: white;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    z-index: 2;
}

.logo-remove-btn:hover {
    transform: scale(1.1);
    background-color: #dc2626;
}

/* Dynamic Table Styling */
.table-wrapper {
    overflow-x: auto;
    margin-bottom: 1.25rem;
    border: 1px solid var(--slate-200);
    border-radius: 10px;
}

.items-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
}

.items-table th {
    background-color: var(--slate-50);
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--slate-500);
    border-bottom: 1px solid var(--slate-200);
}

.items-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--slate-100);
    vertical-align: middle;
}

.items-table tbody tr:last-child td {
    border-bottom: none;
}

.items-table tr {
    transition: var(--transition);
}

.items-table tbody tr:hover {
    background-color: var(--slate-50)/50;
}

.item-desc-col { width: 35%; }
.item-hsn-col { width: 15%; }
.item-qty-col { width: 12%; }
.item-price-col { width: 16%; }
.item-tax-col { width: 14%; }
.item-amount-col { width: 15%; text-align: right; font-weight: 600; color: var(--slate-900); }
.item-action-col { width: 5%; text-align: center; }

.item-input-amount {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--slate-800);
    text-align: right;
    padding-right: 0.5rem;
}

.btn-delete-row {
    background: none;
    border: none;
    color: var(--slate-400);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-delete-row:hover {
    color: var(--danger);
    background-color: #fee2e2;
}

.btn-add-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: white;
    border: 1px solid var(--slate-300);
    color: var(--slate-700);
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-add-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: rgba(79, 70, 229, 0.02);
}

/* Financial Card Layout */
.financial-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.payment-details-section {
    border-right: 1px solid var(--slate-200);
    padding-right: 2rem;
}

.totals-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.totals-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--slate-600);
}

.totals-row.grand-total {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
    border-top: 2px dashed var(--slate-200);
    padding-top: 0.75rem;
    margin-top: 0.25rem;
}

/* Action Controls */
.action-bar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 0.5rem;
}

.btn-download {
    background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
    color: white;
    border: none;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 700;
    padding: 1rem 2rem;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: var(--transition);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
    background: linear-gradient(135deg, var(--primary-hover) 0%, #4f46e5 100%);
}

.btn-download:active {
    transform: translateY(0);
}

/* Preview Pane Layout */
.preview-pane {
    position: sticky;
    top: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.preview-header-bar {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: var(--slate-800);
    color: white;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.preview-badge {
    background-color: var(--success);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
}

.preview-container {
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    border-radius: 8px;
}

/* Real-looking A4 Sheet Preview */
#invoice-preview {
    width: 794px;
    min-height: 1123px;
    background-color: white;
    color: #334155;
    padding: 50px;
    box-sizing: border-box;
    box-shadow: var(--shadow-xl);
    border-radius: 8px;
    transform-origin: top center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 13px;
    line-height: 1.45;
}

/* Invoice Preview Layout Styling */
.ip-accent-bar {
    height: 6px;
    background: linear-gradient(90deg, var(--primary) 0%, #818cf8 100%);
    margin: -50px -50px 35px -50px;
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
}

.ip-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
}

.ip-logo-side {
    max-width: 50%;
}

.ip-logo-placeholder {
    max-height: 65px;
    max-width: 220px;
    object-fit: contain;
    margin-bottom: 10px;
}

.ip-sender-name {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--slate-900);
    margin-bottom: 5px;
}

.ip-sender-details {
    color: var(--slate-500);
    font-size: 0.8rem;
    line-height: 1.4;
    white-space: pre-line;
}

.ip-title-side {
    text-align: right;
}

.ip-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}

.ip-meta-grid {
    display: grid;
    grid-template-columns: auto auto;
    gap: 5px 15px;
    font-size: 0.85rem;
    color: var(--slate-700);
    justify-content: end;
}

.ip-meta-label {
    font-weight: 700;
    color: var(--slate-500);
    text-align: right;
}

.ip-meta-value {
    text-align: left;
    font-weight: 600;
}

.ip-addresses {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    border-top: 1px solid var(--slate-200);
    border-bottom: 1px solid var(--slate-200);
    padding: 20px 0;
    margin-bottom: 30px;
}

.ip-address-block h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--slate-400);
    margin-bottom: 8px;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.ip-address-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--slate-900);
    margin-bottom: 4px;
}

.ip-address-text {
    color: var(--slate-600);
    font-size: 0.8rem;
    line-height: 1.4;
    white-space: pre-line;
}

/* Preview Items Table */
.ip-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
}

.ip-table th {
    background-color: var(--slate-900);
    color: white;
    text-transform: uppercase;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 10px 12px;
    text-align: left;
}

.ip-table th:first-child {
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}

.ip-table th:last-child {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    text-align: right;
}

.ip-table td {
    padding: 12px;
    border-bottom: 1px solid var(--slate-100);
    font-size: 0.85rem;
}

.ip-table tr:last-child td {
    border-bottom: none;
}

.ip-cell-right {
    text-align: right;
}

.ip-cell-center {
    text-align: center;
}

.ip-item-desc {
    font-weight: 600;
    color: var(--slate-900);
}

.ip-item-hsn {
    font-size: 0.75rem;
    color: var(--slate-400);
    margin-top: 2px;
}

/* Preview Totals Section */
.ip-bottom-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 30px;
    margin-top: auto; /* Push to bottom of invoice if contents are short */
}

.ip-payment-info h4, .ip-notes-info h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--slate-400);
    margin-bottom: 6px;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.ip-payment-info p, .ip-notes-info p {
    font-size: 0.75rem;
    color: var(--slate-600);
    line-height: 1.4;
    white-space: pre-line;
}

.ip-notes-info {
    margin-top: 15px;
}

.ip-totals-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background-color: var(--slate-50);
    padding: 18px;
    border-radius: 8px;
    border: 1px solid var(--slate-100);
}

.ip-totals-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--slate-600);
}

.ip-totals-row.grand-total {
    border-top: 1px solid var(--slate-200);
    padding-top: 10px;
    margin-top: 4px;
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--primary);
}

.ip-footer {
    border-top: 1px solid var(--slate-200);
    padding-top: 15px;
    margin-top: 40px;
    text-align: center;
    color: var(--slate-400);
    font-size: 0.75rem;
}

/* Mobile responsive adjustments */
@media (max-width: 1023px) {
    .app-container {
        grid-template-columns: 1fr;
        padding: 0 1rem;
        margin: 1rem auto;
    }
    
    .preview-pane {
        position: relative;
        top: 0;
        margin-top: 1.5rem;
    }
    
    .financial-split {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .payment-details-section {
        border-right: none;
        border-bottom: 1px solid var(--slate-200);
        padding-right: 0;
        padding-bottom: 1.5rem;
    }
}

@media (max-width: 640px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-grid-full {
        grid-column: span 1;
    }
    header {
        padding: 1.5rem 1rem;
    }
    .brand-title {
        font-size: 1.25rem;
    }
    .header-links {
        display: none; /* Hide secondary links on mobile to save space */
    }
}

/* Footer Promo Banner Sticky Bar */
body {
    padding-bottom: 75px; /* Leave room for sticky banner so content isn't clipped */
}

.promo-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(79, 70, 229, 0.25);
    color: white;
    padding: 0.9rem 1.5rem;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 -10px 25px -5px rgba(0, 0, 0, 0.15);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
    transform: translateY(0);
}

.promo-banner.dismissed {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

.promo-content {
    max-width: 1440px;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    padding-right: 2rem; /* Make space for close button */
}

.promo-icon {
    font-size: 1.25rem;
    display: flex;
    align-items: center;
}

.promo-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--slate-200);
    margin: 0;
}

.promo-text strong {
    color: #a5b4fc;
    font-weight: 700;
}

.promo-btn {
    background: linear-gradient(135deg, var(--primary) 0%, #6366f1 100%);
    color: white;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.5rem 1.2rem;
    border-radius: 8px;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.promo-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(79, 70, 229, 0.35);
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary) 100%);
}

.promo-close {
    background: none;
    border: none;
    color: var(--slate-400);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: absolute;
    right: 1.5rem;
}

.promo-close:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.promo-close svg {
    width: 16px;
    height: 16px;
}

/* Adjustments for smaller viewports */
@media (max-width: 1023px) {
    .promo-content {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
        padding-right: 1rem;
    }
    .promo-banner {
        padding: 1.25rem 1rem;
    }
    body {
        padding-bottom: 140px; /* Leave more room for stacked sticky banner */
    }
}

/* PDF Generation specific tweaks - force sizing and colors */
@media print {
    body {
        background-color: white !important;
    }
    #invoice-preview {
        box-shadow: none !important;
        border-radius: 0 !important;
        padding: 0 !important;
        width: 100% !important;
        min-height: auto !important;
        transform: scale(1) !important;
    }
    .ip-accent-bar {
        margin: 0 0 35px 0 !important;
        border-top-left-radius: 0 !important;
        border-top-right-radius: 0 !important;
    }
    .promo-banner {
        display: none !important;
    }
}