/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
  --bg-color: #f8fafc;
  --surface-color: rgba(255, 255, 255, 0.82);
  --surface-strong: #ffffff;
  --surface-border: rgba(148, 163, 184, 0.2);
  --text-color: #0f172a;
  --text-muted: #64748b;
  --text-soft: #475569;
  --card-shadow: 0 2px 12px rgba(15, 23, 42, 0.06);
  --card-hover-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
  --primary: #6366f1;
  --topbar-bg: rgba(255, 255, 255, 0.72);
  --glass-blur: blur(12px);

  --cat-handlowy: #f59e0b;
  --cat-handlowy-bg: rgba(245, 158, 11, 0.11);
  --cat-handlowy-line: rgba(245, 158, 11, 0.34);
  --cat-nowe-marki: #ef4444;
  --cat-nowe-marki-bg: rgba(239, 68, 68, 0.11);
  --cat-nowe-marki-line: rgba(239, 68, 68, 0.34);
  --cat-kontent: #22c55e;
  --cat-kontent-bg: rgba(34, 197, 94, 0.11);
  --cat-kontent-line: rgba(34, 197, 94, 0.34);
  --cat-logistyka: #3b82f6;
  --cat-logistyka-bg: rgba(59, 130, 246, 0.11);
  --cat-logistyka-line: rgba(59, 130, 246, 0.34);
  --cat-informacje: #06b6d4;
  --cat-informacje-bg: rgba(6, 182, 212, 0.11);
  --cat-informacje-line: rgba(6, 182, 212, 0.34);
  --cat-administracja: #d946ef;
  --cat-administracja-bg: rgba(217, 70, 239, 0.11);
  --cat-administracja-line: rgba(217, 70, 239, 0.34);
  --cat-projekty: #0f766e;
  --cat-projekty-bg: rgba(15, 118, 110, 0.12);
  --cat-projekty-line: rgba(15, 118, 110, 0.34);
  --cat-inne: #64748b;
  --cat-inne-bg: rgba(100, 116, 139, 0.11);
  --cat-inne-line: rgba(100, 116, 139, 0.34);
}

[data-theme="dark"] {
  --bg-color: #0f172a;
  --surface-color: rgba(15, 23, 42, 0.72);
  --surface-strong: rgba(15, 23, 42, 0.9);
  --surface-border: rgba(148, 163, 184, 0.14);
  --text-color: #e2e8f0;
  --text-muted: #94a3b8;
  --text-soft: #cbd5e1;
  --card-shadow: 0 4px 16px rgba(2, 8, 23, 0.28);
  --card-hover-shadow: 0 20px 48px rgba(15, 23, 42, 0.48);
  --primary: #818cf8;
  --topbar-bg: rgba(15, 23, 42, 0.82);

  --cat-handlowy-bg: rgba(245, 158, 11, 0.16);
  --cat-nowe-marki-bg: rgba(239, 68, 68, 0.16);
  --cat-kontent-bg: rgba(34, 197, 94, 0.16);
  --cat-logistyka-bg: rgba(59, 130, 246, 0.16);
  --cat-informacje-bg: rgba(6, 182, 212, 0.16);
  --cat-administracja-bg: rgba(217, 70, 239, 0.16);
  --cat-projekty-bg: rgba(15, 118, 110, 0.18);
  --cat-inne-bg: rgba(100, 116, 139, 0.16);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
  color: var(--text-color);
  background-color: var(--bg-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

button,
input {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--topbar-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--surface-border);
}

.brand {
  display: flex;
  align-items: center;
}

.dot {
  color: var(--primary);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--surface-border);
  background: var(--surface-color);
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  color: var(--primary);
  border-color: rgba(99, 102, 241, 0.3);
  transform: rotate(10deg);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.theme-toggle .moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon {
  display: block;
}

.account-btn {
  padding: 8px 14px;
  border: 1px solid var(--surface-border);
  border-radius: 8px;
  background: var(--surface-color);
  color: var(--text-soft);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.account-btn:hover {
  color: var(--text-color);
  border-color: rgba(99, 102, 241, 0.3);
}

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 20px;
}

/* ============================================================
   CARDS CONTAINER & CATEGORY SECTIONS
   ============================================================ */
.cards-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.category-section {
  animation: fadeUp 0.4s ease both;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.category-title {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
}

.category-line {
  flex: 1;
  height: 1px;
  border-radius: 999px;
  background: var(--surface-border);
}

.category-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

/* ============================================================
   CARD
   ============================================================ */
.card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  background: var(--surface-strong);
  box-shadow: var(--card-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-hover-shadow);
}

.icon-wrapper {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid transparent;
}

.icon-wrapper svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card-text {
  min-width: 0;
}

.card-text h2 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.card-text p {
  margin-top: 4px;
  color: var(--text-soft);
  font-size: 0.75rem;
  line-height: 1.5;
}

/* ============================================================
   CATEGORY COLOURS — title, line, icon bg, hover border
   ============================================================ */
[data-cat="projekty"] .category-title { color: var(--cat-projekty); }
[data-cat="projekty"] .category-line  { background: linear-gradient(90deg, var(--cat-projekty-line), transparent); }
[data-cat="projekty"] .icon-wrapper   { background: var(--cat-projekty-bg); border-color: rgba(15, 118, 110, 0.2); color: var(--cat-projekty); }
[data-cat="projekty"] .card:hover     { border-color: var(--cat-projekty-line); box-shadow: 0 16px 40px rgba(15, 118, 110, 0.14); }

[data-cat="handlowy"] .category-title { color: var(--cat-handlowy); }
[data-cat="handlowy"] .category-line  { background: linear-gradient(90deg, var(--cat-handlowy-line), transparent); }
[data-cat="handlowy"] .icon-wrapper   { background: var(--cat-handlowy-bg); border-color: rgba(245, 158, 11, 0.2); color: var(--cat-handlowy); }
[data-cat="handlowy"] .card:hover     { border-color: var(--cat-handlowy-line); box-shadow: 0 16px 40px rgba(245, 158, 11, 0.14); }

[data-cat="nowe-marki"] .category-title { color: var(--cat-nowe-marki); }
[data-cat="nowe-marki"] .category-line  { background: linear-gradient(90deg, var(--cat-nowe-marki-line), transparent); }
[data-cat="nowe-marki"] .icon-wrapper   { background: var(--cat-nowe-marki-bg); border-color: rgba(239, 68, 68, 0.2); color: var(--cat-nowe-marki); }
[data-cat="nowe-marki"] .card:hover     { border-color: var(--cat-nowe-marki-line); box-shadow: 0 16px 40px rgba(239, 68, 68, 0.14); }

[data-cat="kontent"] .category-title { color: var(--cat-kontent); }
[data-cat="kontent"] .category-line  { background: linear-gradient(90deg, var(--cat-kontent-line), transparent); }
[data-cat="kontent"] .icon-wrapper   { background: var(--cat-kontent-bg); border-color: rgba(34, 197, 94, 0.2); color: var(--cat-kontent); }
[data-cat="kontent"] .card:hover     { border-color: var(--cat-kontent-line); box-shadow: 0 16px 40px rgba(34, 197, 94, 0.14); }

[data-cat="logistyka"] .category-title { color: var(--cat-logistyka); }
[data-cat="logistyka"] .category-line  { background: linear-gradient(90deg, var(--cat-logistyka-line), transparent); }
[data-cat="logistyka"] .icon-wrapper   { background: var(--cat-logistyka-bg); border-color: rgba(59, 130, 246, 0.2); color: var(--cat-logistyka); }
[data-cat="logistyka"] .card:hover     { border-color: var(--cat-logistyka-line); box-shadow: 0 16px 40px rgba(59, 130, 246, 0.14); }

[data-cat="informacje"] .category-title { color: var(--cat-informacje); }
[data-cat="informacje"] .category-line  { background: linear-gradient(90deg, var(--cat-informacje-line), transparent); }
[data-cat="informacje"] .icon-wrapper   { background: var(--cat-informacje-bg); border-color: rgba(6, 182, 212, 0.2); color: var(--cat-informacje); }
[data-cat="informacje"] .card:hover     { border-color: var(--cat-informacje-line); box-shadow: 0 16px 40px rgba(6, 182, 212, 0.14); }

[data-cat="administracja"] .category-title { color: var(--cat-administracja); }
[data-cat="administracja"] .category-line  { background: linear-gradient(90deg, var(--cat-administracja-line), transparent); }
[data-cat="administracja"] .icon-wrapper   { background: var(--cat-administracja-bg); border-color: rgba(217, 70, 239, 0.2); color: var(--cat-administracja); }
[data-cat="administracja"] .card:hover     { border-color: var(--cat-administracja-line); box-shadow: 0 16px 40px rgba(217, 70, 239, 0.14); }

[data-cat="inne"] .category-title { color: var(--cat-inne); }
[data-cat="inne"] .category-line  { background: linear-gradient(90deg, var(--cat-inne-line), transparent); }
[data-cat="inne"] .icon-wrapper   { background: var(--cat-inne-bg); border-color: rgba(100, 116, 139, 0.2); color: var(--cat-inne); }
[data-cat="inne"] .card:hover     { border-color: var(--cat-inne-line); box-shadow: 0 16px 40px rgba(100, 116, 139, 0.14); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-align: center;
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
  display: grid;
  gap: 24px;
  padding: 32px;
  border: 1px solid var(--surface-border);
  border-radius: 20px;
  background: var(--surface-strong);
  box-shadow: var(--card-hover-shadow);
}

.login-brand {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.login-copy {
  text-align: center;
}

.login-copy h1 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-top: 4px;
}

.login-text {
  margin-top: 6px;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.login-form {
  display: grid;
  gap: 14px;
}

.login-field {
  display: grid;
  gap: 6px;
}

.login-field span {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.login-field input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--surface-border);
  border-radius: 12px;
  background: var(--surface-color);
  color: var(--text-color);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-field input:focus {
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.login-error {
  padding: 10px 14px;
  border: 1px solid rgba(239, 68, 68, 0.24);
  border-radius: 10px;
  background: rgba(239, 68, 68, 0.08);
  color: #b91c1c;
  font-size: 0.88rem;
  font-weight: 600;
}

[data-theme="dark"] .login-error {
  color: #fecaca;
}

.login-submit {
  min-height: 48px;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #0f766e);
  color: #fff;
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: filter 0.2s ease, transform 0.2s ease;
}

.login-submit:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

/* ============================================================
   PROJECT PAGES (upload, plynnosc, gmail-tracker)
   ============================================================ */
.page-shell {
  width: min(1120px, calc(100% - 28px));
  margin: 0 auto;
  padding-bottom: 20px;
}

.project-hero {
  align-items: center;
}

.project-panel {
  display: grid;
  gap: 14px;
}

.project-meta-row {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--surface-border);
  border-radius: 18px;
  background: var(--surface-strong);
}

.project-label {
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.project-meta-row code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.95rem;
  color: var(--text-color);
  word-break: break-word;
}

/* ============================================================
   UPLOAD PAGE
   ============================================================ */
.upload-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.9fr);
  gap: 16px;
}

.upload-dropzone,
.upload-sidebar,
.upload-history-item {
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  background: var(--surface-strong);
  box-shadow: var(--card-shadow);
}

.upload-dropzone {
  position: relative;
  display: grid;
  gap: 18px;
  min-height: 340px;
  padding: 28px;
  border-style: dashed;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.upload-dropzone:hover,
.upload-dropzone.is-dragover {
  transform: translateY(-2px);
  border-color: var(--cat-projekty-line);
  box-shadow: var(--card-hover-shadow);
}

.upload-dropzone-copy {
  display: grid;
  gap: 12px;
  align-content: start;
}

.upload-badge {
  width: fit-content;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--cat-projekty-bg);
  color: var(--cat-projekty);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.upload-dropzone h2 {
  max-width: 16ch;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1;
  letter-spacing: -0.05em;
}

.upload-dropzone p {
  max-width: 52ch;
  color: var(--text-soft);
  line-height: 1.6;
}

.upload-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.upload-primary,
.upload-secondary {
  min-height: 50px;
  padding: 0 18px;
  border: 0;
  border-radius: 16px;
  font-weight: 700;
  cursor: pointer;
}

.upload-primary {
  background: linear-gradient(135deg, #0f766e, #14b8a6);
  color: #fff;
}

.upload-secondary {
  border: 1px solid var(--surface-border);
  background: transparent;
  color: var(--text-color);
}

.upload-primary:disabled,
.upload-secondary:disabled {
  opacity: 0.6;
  cursor: wait;
}

.upload-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.upload-meta span {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--surface-border);
  background: rgba(15, 118, 110, 0.06);
}

.upload-sidebar {
  display: grid;
  gap: 16px;
  padding: 20px;
}

.upload-status {
  min-height: 92px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.04);
  color: var(--text-soft);
  line-height: 1.55;
}

.upload-status[data-state="ready"]   { background: rgba(59, 130, 246, 0.1);  color: #1d4ed8; }
.upload-status[data-state="success"] { background: rgba(34, 197, 94, 0.12);  color: #166534; }
.upload-status[data-state="error"]   { background: rgba(239, 68, 68, 0.12);  color: #b91c1c; }
.upload-status[data-state="loading"] { background: rgba(245, 158, 11, 0.14); color: #92400e; }

[data-theme="dark"] .upload-status[data-state="ready"]   { color: #bfdbfe; }
[data-theme="dark"] .upload-status[data-state="success"] { color: #bbf7d0; }
[data-theme="dark"] .upload-status[data-state="error"]   { color: #fecaca; }
[data-theme="dark"] .upload-status[data-state="loading"] { color: #fde68a; }

.upload-selection { display: grid; gap: 12px; }

.upload-selection-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.upload-selection-header h3 { font-size: 1rem; }

.upload-selection-header span {
  min-width: 34px;
  min-height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 999px;
  background: var(--cat-projekty-bg);
  color: var(--cat-projekty);
  font-weight: 800;
}

.upload-selection-list {
  list-style: none;
  display: grid;
  gap: 10px;
}

.upload-selection-item,
.upload-selection-empty {
  padding: 12px 14px;
  border: 1px solid var(--surface-border);
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.02);
}

.upload-selection-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.upload-selection-name {
  font-weight: 600;
  word-break: break-word;
}

.upload-selection-size,
.upload-selection-empty {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.upload-history { display: grid; gap: 12px; }

.upload-history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
}

.upload-history-item h3 {
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.upload-history-item p,
.upload-history-empty {
  color: var(--text-muted);
}

.upload-history-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* ============================================================
   INTRO CARD (project sub-pages)
   ============================================================ */
.intro-card {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 26px;
  border: 1px solid var(--surface-border);
  border-radius: 28px;
  background: var(--surface-color);
  box-shadow: var(--card-shadow);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.intro-card h1 {
  margin-top: 6px;
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.intro-copy {
  max-width: 720px;
  margin-top: 10px;
  color: var(--text-soft);
  font-size: 1rem;
  line-height: 1.55;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  .topbar {
    padding: 12px 16px;
  }

  .main {
    padding: 24px 16px 16px;
  }

  .category-cards {
    grid-template-columns: 1fr;
  }

  .upload-layout {
    grid-template-columns: 1fr;
  }

  .intro-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .card {
    padding: 14px;
  }

  .icon-wrapper {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
  }

  .upload-dropzone,
  .upload-sidebar,
  .upload-history-item {
    padding: 18px;
  }

  .upload-history-item,
  .upload-selection-item {
    flex-direction: column;
    align-items: flex-start;
  }
}