/* ========================================================================
INVOICE-GENERATOR — TOOL LANDING PAGE CROSS-CULTURAL DESIGN SYSTEM
Target: RO / DACH / EN | Psychological: Trust + Clarity + Micro-reward
======================================================================== */
/* 1. VARIABLES & THEME =================================================== */
:root {
/* Colors */
--bg-page: #F8FAFC;
--bg-card: #FFFFFF;
--bg-surface: #F1F5F9;
--text-primary: #0F172A;
--text-secondary: #475569;
--text-muted: #94A3B8;
--accent: #2563EB;
--accent-hover: #1D4ED8;
--warm: #D97706;
--success: #10B981;
--error: #EF4444;
--border: #E2E8F0;
--shadow-sm: 0 1px 3px rgba(15,23,42,0.08);
--shadow-md: 0 4px 12px rgba(15,23,42,0.12);
--focus-ring: 0 0 0 3px rgba(37,99,235,0.25);
/* Spacing */
--space-xs: 0.25rem;
--space-sm: 0.5rem;
--space-md: 1rem;
--space-lg: 1.5rem;
--space-xl: 2rem;
--space-2xl: 3rem;
/* Layout */
--radius: 12px;
--radius-sm: 8px;
--max-width: 1200px;
--header-height: 64px;
/* Typography */
--font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
--text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
--text-sm: clamp(0.8125rem, 0.75rem + 0.3vw, 0.9375rem);
--text-base: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
--text-lg: clamp(1rem, 0.9rem + 0.4vw, 1.125rem);
--text-xl: clamp(1.25rem, 1rem + 1vw, 1.5rem);
--text-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 1.875rem);
--text-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.25rem);
/* Motion */
--ease: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
--ease-slow: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
@media (prefers-color-scheme: dark) {
:root {
--bg-page: #0B1120;
--bg-card: #111827;
--bg-surface: #1E293B;
--text-primary: #F1F5F9;
--text-secondary: #CBD5E1;
--text-muted: #64748B;
--border: #334155;
--shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
--shadow-md: 0 4px 12px rgba(0,0,0,0.4);
}
}
html.theme-dark {
--bg-page: #0B1120;
--bg-card: #111827;
--bg-surface: #1E293B;
--text-primary: #F1F5F9;
--text-secondary: #CBD5E1;
--text-muted: #64748B;
--border: #334155;
--shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
--shadow-md: 0 4px 12px rgba(0,0,0,0.4);
}
/* 2. BASE & RESET ======================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
scroll-behavior: smooth;
-webkit-text-size-adjust: 100%;
text-rendering: optimizeLegibility;
font-feature-settings: "kern" 1, "liga" 1;
}
body {
font-family: var(--font-sans);
background: var(--bg-page);
color: var(--text-primary);
line-height: 1.5;
-webkit-font-smoothing: antialiased;
min-height: 100vh;
display: flex;
flex-direction: column;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font: inherit; }
ul, ol { list-style: none; }
/* 3. LAYOUT & CONTAINERS ================================================ */
.container {
width: 100%;
max-width: var(--max-width);
margin: 0 auto;
padding-inline: var(--space-lg);
}
.site-header {
position: sticky;
top: 0;
z-index: 50;
height: var(--header-height);
background: var(--bg-card);
border-bottom: 1px solid var(--border);
display: flex;
align-items: center;
}
.site-header .container {
display: flex;
align-items: center;
justify-content: space-between;
height: 100%;
}
.logo {
display: inline-flex;
align-items: center;
gap: var(--space-sm);
color: var(--text-primary);
font-size: var(--text-lg);
line-height: 1.2;
transition: opacity var(--ease);
}
.logo:hover { opacity: 0.9; }
.logo-img {
width: 32px;
height: 32px;
flex-shrink: 0;
display: block;
border-radius: var(--radius-sm);
}
.logo strong {
font-weight: 700;
letter-spacing: -0.02em;
}
main { flex: 1; padding-block: var(--space-2xl); }
/* 4. TYPOGRAPHY & UTILITIES ============================================= */
h1, h2, h3, h4 {
text-wrap: balance;
line-height: 1.2;
font-weight: 600;
}
h1 { font-size: var(--text-3xl); margin-bottom: var(--space-md); }
h2 { font-size: var(--text-2xl); margin-bottom: var(--space-lg); }
h3 { font-size: var(--text-xl); }
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.sr-only {
position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
/* 5. COMPONENTS ========================================================= */
.lang-switch {
display: inline-flex;
background: var(--bg-surface);
padding: 4px;
border-radius: 999px;
gap: 4px;
align-items: center;
width: auto;
}
.lang-btn {
display: inline-flex;
align-items: center;
gap: 6px;
padding: 6px 12px;
border-radius: 999px;
font-size: var(--text-sm);
font-weight: 500;
color: var(--text-secondary);
background: transparent;
border: none;
transition: all 0.2s ease;
white-space: nowrap;
}
.lang-btn:hover { color: var(--text-primary); }
.lang-btn[aria-current="true"] {
background: var(--bg-card);
color: var(--accent);
font-weight: 600;
box-shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
}
.theme-toggle {
width: 36px; height: 36px;
border-radius: 50%;
border: 1px solid var(--border);
background: var(--bg-surface);
display: grid; place-items: center;
font-size: 1.1rem;
}
.tool-card {
background: var(--bg-card);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: var(--space-lg);
box-shadow: var(--shadow-sm);
display: flex;
flex-direction: column;
gap: var(--space-sm);
position: relative;
contain: layout style;
}
.btn {
display: inline-flex;
align-items: center;
justify-content: center;
gap: var(--space-xs);
padding: var(--space-sm) var(--space-md);
border-radius: var(--radius-sm);
font-size: var(--text-sm);
font-weight: 500;
border: 1px solid transparent;
background: var(--accent);
color: #fff;
transition: var(--ease);
}
.btn:hover { background: var(--accent-hover); }
.btn--outline {
background: transparent;
border-color: var(--border);
color: var(--text-primary);
}
.btn--outline:hover { background: var(--bg-surface); }
.btn--sm { padding: var(--space-xs) var(--space-sm); font-size: var(--text-xs); }
.btn--error { background: var(--error); }
.btn--error:hover { background: #DC2626; }
.form-group { margin-bottom: var(--space-md); }
.form-label {
display: block;
font-size: var(--text-sm);
font-weight: 500;
margin-bottom: var(--space-xs);
}
.form-input, .form-textarea, .form-select {
width: 100%;
padding: var(--space-sm) var(--space-md);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
background: var(--bg-card);
color: var(--text-primary);
font-size: var(--text-base);
transition: var(--ease);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
outline: none;
box-shadow: var(--focus-ring);
border-color: var(--accent);
}
.form-input.is-error, .form-textarea.is-error {
border-color: var(--error);
box-shadow: 0 0 0 3px rgba(239,68,68,0.2);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-select { appearance: none;
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394A3B8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
background-repeat: no-repeat;
background-position: right var(--space-md) center;
padding-right: var(--space-xl);
}
.badge {
display: inline-flex;
align-items: center;
gap: var(--space-xs);
padding: var(--space-xs) var(--space-sm);
border-radius: 999px;
font-size: var(--text-xs);
font-weight: 500;
line-height: 1;
}
.badge--daily { background: var(--warm); color: #fff; }
.badge--new { background: #DBEAFE; color: #1E40AF; }
.badge--success { background: #D1FAE5; color: #065F46; }
/* 6. TOOL-SPECIFIC — INVOICE GENERATOR ================================== */

/* Tabs */
.tab-nav {
display: flex;
gap: var(--space-xs);
border-bottom: 2px solid var(--border);
margin-bottom: var(--space-lg);
overflow-x: auto;
}
.tab-btn {
padding: var(--space-sm) var(--space-lg);
font-size: var(--text-sm);
font-weight: 600;
color: var(--text-muted);
background: transparent;
border: none;
border-bottom: 2px solid transparent;
margin-bottom: -2px;
transition: color var(--ease), border-color var(--ease);
white-space: nowrap;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn.is-active {
color: var(--accent);
border-bottom-color: var(--accent);
}
.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* Invoice sections */
.invoice-section {
background: var(--bg-card);
border: 1px solid var(--border);
border-radius: var(--radius);
padding: var(--space-lg);
margin-bottom: var(--space-lg);
}
.invoice-section-title {
font-size: var(--text-lg);
font-weight: 700;
color: var(--text-primary);
padding-left: var(--space-md);
margin-bottom: var(--space-lg);
border-left: 4px solid var(--accent);
}
.invoice-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: var(--space-md);
}

/* Logo Upload */
.logo-upload-area {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: var(--space-sm);
width: 100%;
min-height: 100px;
border: 2px dashed var(--border);
border-radius: var(--radius);
background: var(--bg-surface);
cursor: pointer;
transition: border-color var(--ease), background-color var(--ease);
padding: var(--space-lg);
text-align: center;
color: var(--text-muted);
font-size: var(--text-sm);
}
.logo-upload-area:hover { border-color: var(--accent); }
.logo-upload-area.dragover { border-color: var(--accent); background: rgba(37,99,235,0.04); }
.logo-preview { display: flex; align-items: center; justify-content: center; }
.logo-preview img { max-height: 80px; max-width: 200px; object-fit: contain; }

/* Items Table */
.items-table { width: 100%; border-collapse: collapse; }
.items-table th {
text-align: left;
padding: var(--space-sm);
font-size: var(--text-xs);
font-weight: 700;
color: var(--text-muted);
text-transform: uppercase;
letter-spacing: 0.05em;
border-bottom: 2px solid var(--border);
background: var(--bg-surface);
white-space: nowrap;
}
.items-table td {
padding: var(--space-xs) var(--space-sm);
border-bottom: 1px solid var(--border);
vertical-align: middle;
}
.items-table input[type="text"],
.items-table input[type="number"] {
width: 100%;
padding: var(--space-xs) var(--space-sm);
border: 1px solid var(--border);
border-radius: var(--radius-sm);
background: var(--bg-card);
color: var(--text-primary);
font-size: var(--text-sm);
}
.items-table input:focus {
outline: none;
border-color: var(--accent);
box-shadow: var(--focus-ring);
}
.items-table input[type="number"] { text-align: right; }
.item-total-cell {
text-align: right;
font-weight: 600;
font-size: var(--text-sm);
white-space: nowrap;
}
.item-actions {
width: 32px; height: 32px;
display: inline-flex; align-items: center; justify-content: center;
border-radius: var(--radius-sm);
color: var(--text-muted);
background: transparent;
font-size: 1.2rem;
transition: background var(--ease), color var(--ease);
}
.item-actions:hover { background: rgba(239,68,68,0.1); color: var(--error); }
.add-item-btn {
display: inline-flex;
align-items: center;
justify-content: center;
gap: var(--space-xs);
padding: var(--space-sm) var(--space-md);
border: 2px dashed var(--border);
border-radius: var(--radius-sm);
background: transparent;
color: var(--accent);
font-size: var(--text-sm);
font-weight: 600;
width: 100%;
transition: border-color var(--ease), background var(--ease);
cursor: pointer;
}
.add-item-btn:hover { border-color: var(--accent); background: rgba(37,99,235,0.04); }

/* Invoice Summary */
.invoice-summary {
background: var(--bg-surface);
border-radius: var(--radius-sm);
padding: var(--space-md);
margin-top: var(--space-md);
}
.summary-row {
display: flex;
justify-content: space-between;
align-items: center;
padding: var(--space-xs) 0;
font-size: var(--text-sm);
color: var(--text-secondary);
}
.summary-row + .summary-row { border-top: 1px solid var(--border); }
.summary-total {
font-size: var(--text-lg);
font-weight: 700;
color: var(--accent);
border-top: 2px solid var(--accent);
margin-top: var(--space-xs);
padding-top: var(--space-sm);
}

/* Template Cards */
.template-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: var(--space-md);
}
.template-card {
display: flex;
flex-direction: column;
border: 2px solid var(--border);
border-radius: var(--radius);
padding: var(--space-sm);
cursor: pointer;
transition: border-color var(--ease), box-shadow var(--ease);
background: var(--bg-card);
text-align: center;
}
.template-card:hover { border-color: var(--accent); box-shadow: var(--shadow-md); }
.template-card.is-active { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.template-preview {
aspect-ratio: 210 / 297;
background: var(--bg-surface);
border-radius: var(--radius-sm);
margin-bottom: var(--space-sm);
overflow: hidden;
}
.template-preview--classic { border-top: 4px solid var(--accent); }
.template-preview--modern { border-left: 4px solid var(--accent); }
.template-preview--minimal { border-bottom: 2px solid var(--text-primary); }
.template-card span {
font-size: var(--text-sm);
font-weight: 600;
color: var(--text-primary);
}

/* History Table */
.history-table { width: 100%; border-collapse: collapse; }
.history-table th {
text-align: left;
padding: var(--space-sm) var(--space-md);
font-size: var(--text-xs);
font-weight: 700;
color: var(--text-muted);
text-transform: uppercase;
letter-spacing: 0.05em;
border-bottom: 2px solid var(--border);
background: var(--bg-surface);
white-space: nowrap;
}
.history-table td {
padding: var(--space-sm) var(--space-md);
border-bottom: 1px solid var(--border);
font-size: var(--text-sm);
vertical-align: middle;
}
.history-table tr:hover td { background: var(--bg-surface); }
.history-actions { display: flex; gap: var(--space-xs); flex-wrap: nowrap; }

/* Toast Notifications */
.toast-container {
position: fixed;
top: var(--space-lg);
right: var(--space-lg);
z-index: 9999;
display: flex;
flex-direction: column;
gap: var(--space-sm);
pointer-events: none;
}
.toast {
display: flex;
align-items: center;
gap: var(--space-sm);
padding: var(--space-sm) var(--space-lg);
border-radius: var(--radius-sm);
background: var(--bg-card);
color: var(--text-primary);
box-shadow: var(--shadow-md);
border: 1px solid var(--border);
font-size: var(--text-sm);
font-weight: 500;
pointer-events: auto;
transform: translateX(120%);
opacity: 0;
transition: transform var(--ease-slow), opacity var(--ease-slow);
}
.toast.is-visible { transform: translateX(0); opacity: 1; }
.toast--success { border-left: 4px solid var(--success); }
.toast--error { border-left: 4px solid var(--error); }
.toast--info { border-left: 4px solid var(--accent); }

/* ========================================================================
7. STICKY DONATION BUTTON (Ethical UX)
======================================================================== */
.sticky-donate-wrapper {
position: fixed;
bottom: 24px;
right: 24px;
z-index: 90;
display: flex;
flex-direction: column;
align-items: flex-end;
gap: 8px;
opacity: 0;
transform: translateY(20px);
transition: opacity var(--ease), transform var(--ease);
pointer-events: none;
}
.sticky-donate-wrapper.is-visible {
opacity: 1;
transform: translateY(0);
pointer-events: auto;
}
.sticky-donate-btn {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 10px 16px;
background: #FFDD00;
color: #111;
font-weight: 600;
font-size: var(--text-sm);
border-radius: 999px;
box-shadow: var(--shadow-md);
border: none;
text-decoration: none;
transition: transform var(--ease), box-shadow var(--ease);
}
.sticky-donate-btn:hover {
transform: translateY(-2px);
box-shadow: 0 6px 16px rgba(255,205,0,0.3);
}
.sticky-donate-btn:focus-visible {
outline: none;
box-shadow: var(--focus-ring);
}
.donate-icon { font-size: 1.2em; }
/* ========================================================================
8. MODAL
======================================================================== */
.modal-overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0,0,0,0.5);
display: flex;
align-items: center;
justify-content: center;
z-index: 10000;
opacity: 0;
visibility: hidden;
transition: opacity 0.3s ease, visibility 0.3s ease;
}
.modal-overlay.is-active {
opacity: 1;
visibility: visible;
}
.modal-container {
background: var(--bg-card);
border-radius: var(--radius);
box-shadow: 0 20px 40px rgba(0,0,0,0.15);
max-width: 90vw;
max-height: 90vh;
overflow: hidden;
display: flex;
flex-direction: column;
position: relative;
}
.modal-close {
position: absolute;
top: var(--space-md);
right: var(--space-md);
background: none;
border: none;
font-size: 1.5rem;
cursor: pointer;
color: var(--text-muted);
z-index: 1;
width: 32px;
height: 32px;
display: flex;
align-items: center;
justify-content: center;
border-radius: 50%;
transition: background 0.2s ease;
}
.modal-close:hover { background: var(--bg-surface); color: var(--text-primary); }
.modal-content {
padding: var(--space-2xl);
overflow-y: auto;
max-height: 80vh;
}
.modal-loading {
text-align: center;
padding: var(--space-2xl);
color: var(--text-muted);
}
/* ========================================================================
9. ANIMATIONS
======================================================================== */
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
/* ========================================================================
10. RESPONSIVE
======================================================================== */
@media (max-width: 640px) {
:root {
--space-xl: 1.5rem;
--space-2xl: 2rem;
}
.container { padding-inline: var(--space-md); }
.invoice-grid { grid-template-columns: 1fr; }
.template-grid { grid-template-columns: 1fr 1fr; }
.invoice-section { padding: var(--space-md); }
.items-table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.items-table { min-width: 560px; }
.tab-btn { padding: var(--space-sm) var(--space-md); font-size: var(--text-xs); }
.lang-btn span { display: none; }
.lang-btn { padding: 6px 8px; font-size: 1.2rem; }
.sticky-donate-wrapper { bottom: 16px; right: 16px; }
.sticky-donate-btn { padding: 8px 14px; font-size: var(--text-xs); border-radius: 999px; }
.toast-container { top: var(--space-sm); right: var(--space-sm); left: var(--space-sm); }
.modal-container { max-width: 95vw; }
.history-table { font-size: var(--text-xs); }
}
/* ========================================================================
11. REDUCED MOTION
======================================================================== */
@media (prefers-reduced-motion: reduce) {
*, *::before, *::after {
animation-duration: 0.01ms !important;
transition-duration: 0.01ms !important;
}
}
/* ========================================================================
12. PRINT
======================================================================== */
@media print {
.site-header, .subsite-banner, .btn, .theme-toggle, .lang-switch,
.sticky-donate-wrapper, .toast-container, .tab-nav, .subsite-legal-footer,
.modal-overlay, #pwaInstallBtn { display: none !important; }
body { background: #fff; color: #000; padding-bottom: 0; }
.tool-card { break-inside: avoid; box-shadow: none; border: 1px solid #000; }
.invoice-section { break-inside: avoid; }
}