/* ============================================================
   DNA ME Deal Registration — Design System
   Dark theme aligned with newscenter.dna-me.net
   ============================================================ */

/* --- 0. Self-hosted Fonts (DSGVO-compliant) --- */
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/public/fonts/dm-sans-v17-latin-regular.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/public/fonts/dm-sans-v17-latin-500.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/public/fonts/dm-sans-v17-latin-600.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/public/fonts/dm-sans-v17-latin-700.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('/public/fonts/dm-sans-v17-latin-800.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/public/fonts/inter-v20-latin-regular.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/public/fonts/inter-v20-latin-500.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/public/fonts/inter-v20-latin-600.woff2') format('woff2');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/public/fonts/inter-v20-latin-700.woff2') format('woff2');
}

/* --- 1. Variables (dark theme, aligned with newscenter) --- */
:root {
  --color-bg: #0f1419;
  --color-surface: #1a2332;
  --color-border: #2d3a4f;
  --color-text: #e6edf3;
  --color-text-muted: #8b9cb3;
  --color-white: #ffffff;

  --color-accent: #3b82f6;
  --color-accent-hover: #60a5fa;
  --color-accent-light: rgba(59, 130, 246, 0.15);
  --color-secondary: #6C5CE7;

  --gradient-accent: linear-gradient(135deg, #3b82f6 0%, #6C5CE7 100%);

  --color-error: #f87171;
  --color-error-bg: rgba(239, 68, 68, 0.15);
  --color-success: #22c55e;
  --color-success-bg: rgba(34, 197, 94, 0.15);
  --color-warning: #fbbf24;
  --color-warning-bg: rgba(251, 191, 36, 0.15);
  --color-info: #38bdf8;
  --color-info-bg: rgba(56, 189, 248, 0.15);

  --font-display: 'DM Sans', sans-serif;
  --font-sans: 'Inter', sans-serif;
  --font-mono: 'Consolas', 'Courier New', monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --container-max: 960px;
  --container-wide: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --transition: 0.2s ease;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 2. Reset / Base --- */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
img { max-width: 100%; display: block; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); text-decoration: underline; }

/* --- 3. Typography --- */
h1, h2, h3, h4 {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}
h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }
p { margin: 0 0 var(--space-md); }
small { font-size: 0.85rem; color: var(--color-text-muted); }
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-surface);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  color: var(--color-accent);
}

/* --- 4. Layout --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  flex: 1;
}
.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  flex: 1;
}
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

/* --- 5. Header / Nav --- */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  height: 56px;
}
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
}
.logo:hover { text-decoration: none; color: var(--color-text); }
.logo-img { height: 28px; width: auto; }
.logo-text {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  border-left: 1px solid var(--color-border);
  padding-left: var(--space-sm);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius);
  transition: var(--transition-smooth);
}
.nav-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}
.nav-link--logout { color: var(--color-text-muted); opacity: 0.7; }
.nav-link--logout:hover { opacity: 1; }
.nav-user {
  font-size: 0.85rem;
  color: var(--color-accent);
  padding: 0 var(--space-sm);
  font-weight: 500;
}
.mobile-nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  padding: var(--space-sm);
}
.hamburger, .hamburger::before, .hamburger::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  position: relative;
  transition: transform var(--transition);
}
.hamburger::before, .hamburger::after { content: ''; position: absolute; left: 0; }
.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

/* --- 6. Forms --- */
.form-group {
  margin-bottom: var(--space-lg);
}
.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}
.form-label .required { color: var(--color-error); }
.form-hint {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
  opacity: 0.7;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  font-size: 1rem;
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-input::placeholder { color: var(--color-text-muted); opacity: 0.5; }
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}
.form-input.is-invalid,
.form-select.is-invalid {
  border-color: var(--color-error);
}
.form-error {
  font-size: 0.8rem;
  color: var(--color-error);
  margin-top: var(--space-xs);
}
.form-textarea { min-height: 100px; resize: vertical; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.form-radio-group {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}
.form-radio-group label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--color-text);
}

/* File drop zone */
.file-drop {
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  position: relative;
}
.file-drop:hover,
.file-drop.drag-over {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}
.file-drop input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}
.file-drop-icon {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}
.file-drop-text {
  font-size: 0.95rem;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}
.file-drop-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0;
}
.file-drop-selected {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  justify-content: center;
  color: var(--color-accent);
  font-weight: 500;
}
.file-drop-name {
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-drop-clear {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}
.file-drop-clear:hover {
  color: var(--color-error);
}
.file-drop.has-file {
  border-style: solid;
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

/* --- 7. Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.6rem 1.2rem;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
  line-height: 1.4;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-white);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}
.btn-secondary {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-accent);
  color: var(--color-text);
}
.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error);
  border-color: rgba(239, 68, 68, 0.3);
}
.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
  color: var(--color-error);
}
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.85rem; }
.btn-lg { padding: 0.8rem 1.6rem; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn-group { display: flex; gap: var(--space-sm); flex-wrap: wrap; }

/* --- 8. Cards --- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}
.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-display);
  font-weight: 600;
}
.card-body { padding: var(--space-lg); }
.card-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: rgba(0, 0, 0, 0.15);
}

/* --- 9. Tables --- */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.table th, .table td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.table th {
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  background: rgba(0, 0, 0, 0.2);
}
.table tbody tr { transition: background var(--transition); }
.table tbody tr:hover { background: rgba(255, 255, 255, 0.03); }
.table-striped tbody tr:nth-child(even) { background: rgba(255, 255, 255, 0.02); }
.table-striped tbody tr:nth-child(even):hover { background: rgba(255, 255, 255, 0.05); }
.table-clickable tbody tr { cursor: pointer; }
.table td a { font-weight: 500; }
.table .collision-row { background: var(--color-warning-bg) !important; }

/* --- 10. Badges --- */
.badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.badge-new { background: var(--color-info-bg); color: var(--color-info); }
.badge-pending { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-approved { background: var(--color-success-bg); color: var(--color-success); }
.badge-rejected { background: var(--color-error-bg); color: var(--color-error); }
.badge-realized { background: var(--color-accent-light); color: var(--color-accent); }
.badge-negotiation { background: rgba(108, 92, 231, 0.15); color: #a78bfa; }
.badge-closed-won { background: var(--color-success-bg); color: var(--color-success); }
.badge-closed-lost { background: rgba(255, 255, 255, 0.05); color: var(--color-text-muted); }
.badge-active { background: var(--color-success-bg); color: var(--color-success); }
.badge-deactivated { background: rgba(255, 255, 255, 0.05); color: var(--color-text-muted); }
.badge-uploaded { background: var(--color-info-bg); color: var(--color-info); }
.badge-conflict { background: var(--color-error-bg); color: var(--color-error); }

/* --- 11. Progress Steps --- */
.progress-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: var(--space-xl) 0 var(--space-2xl);
}
.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  position: relative;
}
.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9rem;
  border: 2px solid var(--color-border);
  color: var(--color-text-muted);
  background: var(--color-surface);
  transition: all var(--transition);
}
.step-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.step-active .step-number {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}
.step-active .step-label { color: var(--color-accent); }
.step-completed .step-number {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: var(--color-white);
}
.step-completed .step-label { color: var(--color-text-muted); }
.step-connector {
  width: 60px;
  height: 2px;
  background: var(--color-border);
  margin: 0 var(--space-sm);
  align-self: flex-start;
  margin-top: 17px;
}
.step-completed + .step-connector { background: var(--color-accent); }

/* --- 12. Flash Messages --- */
.flash {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
  font-size: 0.9rem;
  font-weight: 500;
}
.flash-error {
  background: var(--color-error-bg);
  color: var(--color-error);
  border: 1px solid rgba(239, 68, 68, 0.3);
}
.flash-success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}
.flash-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid rgba(251, 191, 36, 0.3);
}
.flash-info {
  background: var(--color-info-bg);
  color: var(--color-info);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

/* --- 13. Dashboard Stats --- */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: var(--transition-smooth);
}
.stat-card:hover {
  border-color: var(--color-accent);
}
.stat-card .stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}
.stat-card .stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: var(--space-xs);
}

/* --- 14. Staff / Filter Bar --- */
.filter-bar {
  display: flex;
  gap: var(--space-md);
  align-items: flex-end;
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}
.filter-bar .form-group { margin-bottom: 0; flex: 1; min-width: 150px; }
.filter-bar .form-input,
.filter-bar .form-select { padding: 0.5rem 0.7rem; font-size: 0.85rem; }
.action-bar {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}
.detail-grid {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
}
.detail-grid dt {
  font-weight: 600;
  color: var(--color-text-muted);
}
.detail-grid dd { margin: 0; color: var(--color-text); }

/* --- 15. Auth Pages --- */
.auth-page .container,
.auth-page .container-wide {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 56px - 60px);
}
.auth-card {
  width: 100%;
  max-width: 440px;
}
.auth-logo {
  text-align: center;
  margin-bottom: var(--space-xl);
}
.auth-logo img { height: 48px; margin: 0 auto; }
.auth-subtitle { color: var(--color-text-muted); }
.auth-footer { text-align: center; margin-top: var(--space-lg); font-size: 0.9rem; color: var(--color-text-muted); }

/* --- 16. Pagination --- */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
}
.pagination a, .pagination span {
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--color-text-muted);
}
.pagination a:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-accent);
  color: var(--color-text);
}
.pagination .active {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

/* --- 17. Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  padding: var(--space-lg) 0;
  margin-top: auto;
}
.footer-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  text-align: center;
}
.site-footer p { margin: 0; }
.site-footer a {
  color: var(--color-accent);
  text-decoration: none;
}
.site-footer a:hover { text-decoration: underline; }

/* --- 18. Responsive --- */
@media (max-width: 768px) {
  .mobile-nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-md) var(--space-lg);
  }
  .main-nav.nav-open { display: flex; }
  .nav-link { padding: var(--space-sm) 0; }
  .nav-user { padding: var(--space-sm) 0; }
  .form-row { grid-template-columns: 1fr; }
  .dashboard-stats { grid-template-columns: 1fr 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; }
  .step-connector { width: 30px; }
  h1 { font-size: 1.4rem; }
}

@media (max-width: 480px) {
  .container, .container-wide { padding: var(--space-md); }
  .header-inner { padding: 0 var(--space-md); }
  .card-body, .card-header, .card-footer { padding: var(--space-md); }
  .dashboard-stats { grid-template-columns: 1fr; }
  .btn-group { flex-direction: column; }
  .btn-group .btn { width: 100%; }
}