/**
 * PDF24Creator Frontend Stylesheet
 * High-performance Tailwind-inspired design system
 */

/* CSS Reset & Base */
*, ::before, ::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border-width: 0;
    border-style: solid;
    border-color: #e2e8f0;
}

html {
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    -moz-tab-size: 4;
    tab-size: 4;
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: #f8fafc;
    color: #1e293b;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout & Containers */
.max-w-7xl { max-width: 80rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-xl { max-width: 36rem; }
.max-w-md { max-width: 28rem; }
.max-w-sm { max-width: 24rem; }

.mx-auto { margin-left: auto; margin-right: auto; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.py-10 { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-16 { padding-top: 4rem; padding-bottom: 4rem; }
.py-24 { padding-top: 6rem; padding-bottom: 6rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }
.p-12 { padding: 3rem; }
.p-14 { padding: 3.5rem; }

@media (min-width: 640px) {
    .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
    .sm\:p-10 { padding: 2.5rem; }
    .sm\:p-12 { padding: 3rem; }
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .sm\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .sm\:flex-row { flex-direction: row; }
    .sm\:w-auto { width: auto; }
    .sm\:text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
    .sm\:text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
    .sm\:text-5xl { font-size: 3rem; line-height: 1; }
}

@media (min-width: 768px) {
    .md\:flex { display: flex; }
    .md\:hidden { display: none; }
    .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .md\:py-24 { padding-top: 6rem; padding-bottom: 6rem; }
}

@media (min-width: 1024px) {
    .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
    .lg\:grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
    .lg\:col-span-2 { grid-column: span 2 / span 2; }
    .lg\:text-5xl { font-size: 3rem; line-height: 1; }
    .lg\:text-6xl { font-size: 3.75rem; line-height: 1; }
}

/* Flex & Grid */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-grow { flex-grow: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.space-y-1 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.25rem; }
.space-y-2 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.5rem; }
.space-y-3 > :not([hidden]) ~ :not([hidden]) { margin-top: 0.75rem; }
.space-y-4 > :not([hidden]) ~ :not([hidden]) { margin-top: 1rem; }
.space-y-6 > :not([hidden]) ~ :not([hidden]) { margin-top: 1.5rem; }
.space-y-8 > :not([hidden]) ~ :not([hidden]) { margin-top: 2rem; }
.space-y-10 > :not([hidden]) ~ :not([hidden]) { margin-top: 2.5rem; }
.space-y-12 > :not([hidden]) ~ :not([hidden]) { margin-top: 3rem; }
.space-y-16 > :not([hidden]) ~ :not([hidden]) { margin-top: 4rem; }

/* Colors & Backgrounds */
.bg-white { background-color: #ffffff; }
.bg-slate-50 { background-color: #f8fafc; }
.bg-slate-100 { background-color: #f1f5f9; }
.bg-slate-800 { background-color: #1e293b; }
.bg-slate-900 { background-color: #0f172a; }
.bg-blue-50 { background-color: #eff6ff; }
.bg-blue-100 { background-color: #dbeafe; }
.bg-blue-600 { background-color: #2563eb; }
.bg-blue-700 { background-color: #1d4ed8; }
.bg-emerald-50 { background-color: #ecfdf5; }
.bg-emerald-100 { background-color: #d1fae5; }
.bg-emerald-600 { background-color: #059669; }
.bg-emerald-700 { background-color: #047857; }
.bg-amber-50 { background-color: #fffbeb; }
.bg-amber-100 { background-color: #fef3c7; }
.bg-rose-50 { background-color: #fff1f2; }
.bg-rose-100 { background-color: #ffe4e6; }
.bg-rose-600 { background-color: #e11d48; }

.text-white { color: #ffffff; }
.text-slate-200 { color: #e2e8f0; }
.text-slate-400 { color: #94a3b8; }
.text-slate-500 { color: #64748b; }
.text-slate-600 { color: #475569; }
.text-slate-700 { color: #334155; }
.text-slate-800 { color: #1e293b; }
.text-slate-900 { color: #0f172a; }
.text-blue-500 { color: #3b82f6; }
.text-blue-600 { color: #2563eb; }
.text-blue-700 { color: #1d4ed8; }
.text-emerald-400 { color: #34d399; }
.text-emerald-600 { color: #059669; }
.text-emerald-700 { color: #047857; }
.text-emerald-800 { color: #065f46; }
.text-amber-500 { color: #f59e0b; }
.text-amber-600 { color: #d97706; }
.text-amber-800 { color: #92400e; }
.text-rose-700 { color: #be123c; }
.text-rose-800 { color: #9f1239; }

/* Borders & Shadows */
.border { border-width: 1px; }
.border-2 { border-width: 2px; }
.border-b { border-bottom-width: 1px; }
.border-t { border-top-width: 1px; }
.border-dashed { border-style: dashed; }
.border-slate-100 { border-color: #f1f5f9; }
.border-slate-200 { border-color: #e2e8f0; }
.border-slate-300 { border-color: #cbd5e1; }
.border-slate-700 { border-color: #334155; }
.border-slate-800 { border-color: #1e293b; }
.border-blue-200 { border-color: #bfdbfe; }
.border-blue-500 { border-color: #3b82f6; }
.border-blue-600 { border-color: #2563eb; }
.border-emerald-200 { border-color: #a7f3d0; }
.border-rose-200 { border-color: #fecdd3; }

.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }
.rounded-full { border-radius: 9999px; }

.shadow-sm { box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05); }
.shadow-md { box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }

/* Typography */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.font-sans { font-family: ui-sans-serif, system-ui, sans-serif; }
.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.text-\[10px\] { font-size: 10px; line-height: 14px; }
.text-\[11px\] { font-size: 11px; line-height: 15px; }
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.uppercase { text-transform: uppercase; }
.capitalize { text-transform: capitalize; }
.tracking-tight { letter-spacing: -0.025em; }
.tracking-wider { letter-spacing: 0.05em; }
.leading-tight { line-height: 1.25; }
.leading-relaxed { line-height: 1.625; }
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Sizing */
.w-full { width: 100%; }
.w-2 { width: 0.5rem; }
.w-3\.5 { width: 0.875rem; }
.w-4 { width: 1rem; }
.w-5 { width: 1.25rem; }
.w-6 { width: 1.5rem; }
.w-7 { width: 1.75rem; }
.w-8 { width: 2rem; }
.w-10 { width: 2.5rem; }
.w-12 { width: 3rem; }
.w-16 { width: 4rem; }
.w-20 { width: 5rem; }
.w-44 { width: 11rem; }
.h-full { height: 100%; }
.h-2 { height: 0.5rem; }
.h-3\.5 { height: 0.875rem; }
.h-4 { height: 1rem; }
.h-5 { height: 1.25rem; }
.h-6 { height: 1.5rem; }
.h-7 { height: 1.75rem; }
.h-8 { height: 2rem; }
.h-9 { height: 2.25rem; }
.h-10 { height: 2.5rem; }
.h-16 { height: 4rem; }
.h-20 { height: 5rem; }
.min-h-screen { min-height: 100vh; }
.shrink-0 { flex-shrink: 0; }

/* Positioning & Display */
.sticky { position: sticky; }
.top-0 { top: 0; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-y-0 { top: 0; bottom: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.right-3 { right: 0.75rem; }
.pl-4 { padding-left: 1rem; }
.pl-11 { padding-left: 2.75rem; }
.pr-24 { padding-right: 6rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.ml-1 { margin-left: 0.25rem; }
.-mt-1 { margin-top: -0.25rem; }

.block { display: block; }
.hidden { display: none; }
.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }
.z-50 { z-index: 50; }

/* Transitions & Interactivity */
.transition-colors { transition-property: color, background-color, border-color; transition-duration: 150ms; }
.transition-all { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 200ms; }
.transition-transform { transition-property: transform; transition-duration: 200ms; }
.cursor-pointer { cursor: pointer; }
.pointer-events-none { pointer-events: none; }

.group:hover .group-hover\:scale-105 { transform: scale(1.05); }
.group:hover .group-hover\:scale-110 { transform: scale(1.1); }
.group:hover .group-hover\:text-blue-600 { color: #2563eb; }
.group:hover .group-hover\:bg-blue-600 { background-color: #2563eb; }
.group:hover .group-hover\:text-white { color: #ffffff; }
.group:hover .group-hover\:block { display: block; }

a { text-decoration: none; color: inherit; }
button, input, textarea, select { font-family: inherit; font-size: 100%; }

/* Drag and Drop Active Class */
.drag-over {
    border-color: #2563eb !important;
    background-color: #eff6ff !important;
    transform: scale(1.01);
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.animate-spin { animation: spin 1s linear infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }