/* ============================================
   Marco Kunze - Standalone CSS (replaces Tailwind CDN)
   All utility classes implemented directly.
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { line-height: 1.5; -webkit-text-size-adjust: 100%; font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
body { margin: 0; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: inherit; }
button, input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-size: inherit; font-weight: inherit; }

/* --- Layout Utilities --- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }
.flex-grow { flex-grow: 1; }
.flex-shrink-0 { flex-shrink: 0; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }
.gap-x-4 { column-gap: 1rem; }
.gap-x-6 { column-gap: 1.5rem; }
.gap-y-2 { row-gap: 0.5rem; }
.space-x-1 > * + * { margin-left: 0.25rem; }
.space-y-1 > * + * { margin-top: 0.25rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }
.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-\[auto_1fr\] { grid-template-columns: auto 1fr; }

/* --- Sizing --- */
.w-full { width: 100%; }
.w-4 { width: 1rem; }
.w-5 { width: 1.25rem; }
.w-6 { width: 1.5rem; }
.w-32 { width: 8rem; }
.w-48 { width: 12rem; }
.h-4 { height: 1rem; }
.h-5 { height: 1.25rem; }
.h-6 { height: 1.5rem; }
.h-14 { height: 3.5rem; }
.h-32 { height: 8rem; }
.h-48 { height: 12rem; }
.min-h-screen { min-height: 100vh; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-md { max-width: 28rem; }

/* --- Spacing --- */
.p-2 { padding: 0.5rem; }
.p-5 { padding: 1.25rem; }
.p-6 { padding: 1.5rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-6 { padding-top: 1.5rem; padding-bottom: 1.5rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-4 { padding-bottom: 1rem; }
.pl-4 { padding-left: 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-auto { margin-top: auto; }
.mb-1 { margin-top: 0; 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; }
.mb-8 { margin-bottom: 2rem; }
.-mb-px { margin-bottom: -1px; }

/* --- Typography --- */
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.italic { font-style: italic; }
.tracking-wide { letter-spacing: 0.025em; }
.text-center { text-align: center; }
.underline { text-decoration: underline; }
.list-disc { list-style-type: disc; }
.list-inside { list-style-position: inside; }

/* --- Colors --- */
.text-white { color: #ffffff; }
.text-slate-300 { color: #cbd5e1; }
.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-600 { color: #2563eb; }
.text-blue-700 { color: #1d4ed8; }
.text-blue-800 { color: #1e40af; }
.text-red-500 { color: #ef4444; }
.text-red-600 { color: #dc2626; }
.text-red-700 { color: #b91c1c; }
.text-green-700 { color: #15803d; }
.text-green-800 { color: #166534; }

.bg-slate-50 { background-color: #f8fafc; }
.bg-slate-800 { background-color: #1e293b; }
.bg-white { background-color: #ffffff; }
.bg-blue-600 { background-color: #2563eb; }
.bg-green-100 { background-color: #dcfce7; }
.bg-red-100 { background-color: #fee2e2; }

/* --- Borders --- */
.border { border-width: 1px; border-style: solid; }
.border-b { border-bottom-width: 1px; border-bottom-style: solid; }
.border-b-2 { border-bottom-width: 2px; border-bottom-style: solid; }
.border-l-4 { border-left-width: 4px; border-left-style: solid; }
.border-2 { border-width: 2px; border-style: solid; }
.border-4 { border-width: 4px; border-style: solid; }
.border-transparent { border-color: transparent; }
.border-slate-200 { border-color: #e2e8f0; }
.border-slate-300 { border-color: #cbd5e1; }
.border-blue-400 { border-color: #60a5fa; }
.border-blue-500 { border-color: #3b82f6; }
.border-green-400 { border-color: #4ade80; }
.border-red-400 { border-color: #f87171; }
.border-white { border-color: #ffffff; }
.rounded { border-radius: 0.25rem; }
.rounded-lg { border-radius: 0.5rem; }
.rounded-full { border-radius: 9999px; }

/* --- Shadows --- */
.shadow { box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1); }
.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); }

/* --- Position --- */
.sticky { position: sticky; }
.top-0 { top: 0; }
.z-50 { z-index: 50; }
.relative { position: relative; }
.absolute { position: absolute; }

/* --- Object --- */
.object-cover { object-fit: cover; }

/* --- Transitions --- */
.transition-colors { transition-property: color, background-color, border-color; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }

/* --- Hover States --- */
.hover\:text-white:hover { color: #ffffff; }
.hover\:text-blue-300:hover { color: #93c5fd; }
.hover\:text-blue-800:hover { color: #1e40af; }
.hover\:bg-slate-700:hover { background-color: #334155; }
.hover\:bg-blue-700:hover { background-color: #1d4ed8; }
.hover\:underline:hover { text-decoration: underline; }
.hover\:no-underline:hover { text-decoration: none; }
.hover\:border-slate-300:hover { border-color: #cbd5e1; }
.hover\:text-slate-700:hover { color: #334155; }

/* --- Focus States --- */
.focus\:outline-none:focus { outline: 2px solid transparent; outline-offset: 2px; }
.focus\:ring-2:focus { box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px #3b82f6; }
.focus\:ring-blue-500:focus { --ring-color: #3b82f6; }
.focus\:border-blue-500:focus { border-color: #3b82f6; }
.focus\:ring-offset-2:focus { box-shadow: 0 0 0 2px #ffffff, 0 0 0 4px #3b82f6; }

/* --- Form Inputs --- */
input[type="text"], input[type="email"], input[type="password"], textarea, select {
    border: 1px solid #cbd5e1;
    border-radius: 0.25rem;
    padding: 0.5rem 0.75rem;
    width: 100%;
    color: #1e293b;
    background-color: #ffffff;
}
input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus, textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
}

/* ========== Responsive: sm (640px+) ========== */
@media (min-width: 640px) {
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .sm\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ========== Responsive: md (768px+) ========== */
@media (min-width: 768px) {
    .md\:flex { display: flex; }
    .md\:flex-row { flex-direction: row; }
    .md\:hidden { display: none; }
}

/* ========== Timeline ========== */
.timeline {
    position: relative;
    padding-left: 2rem;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #cbd5e1;
}
.timeline-item {
    position: relative;
    padding-bottom: 2rem;
}
.timeline-item:last-child {
    padding-bottom: 0;
}
.timeline-dot {
    position: absolute;
    left: -1.75rem;
    top: 0.25rem;
    width: 0.75rem;
    height: 0.75rem;
    background-color: #3b82f6;
    border-radius: 50%;
    border: 2px solid #e2e8f0;
}

/* ========== Tab active indicator ========== */
.tab-active {
    border-bottom-color: #3b82f6 !important;
    color: #1e40af !important;
}

/* ========== Print ========== */
@media print {
    nav, footer, #menu-toggle, #mobile-menu { display: none !important; }
    main { max-width: 100%; padding: 0; }
}