@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --color-bg-primary: #fdfdfd;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f2f2ef;
  --color-bg-inverse: #141414;
  --color-bg-hover: rgba(20, 20, 20, 0.04);

  --color-brand-primary: #141414;
  --color-brand-primary-hover: #1f2025;
  --color-brand-secondary: #666666;
  --color-brand-accent: #3b82f6;
  --color-danger: #dc2626;

  --color-border-primary: #eeeeee;
  --color-border-secondary: #d3d3d3;
  --color-border-muted: rgba(20, 20, 20, 0.08);
  --color-border-hover: rgba(20, 20, 20, 0.18);
  --color-border-focus: #3b82f6;
  --color-border-error: #dc2626;
  --color-border-success: #166534;
  --color-border-form: #c5ccd8;
  --color-border-form-hover: #a0a9b6;
  --color-border-spinner: rgba(17, 24, 39, 0.12);
  --color-border-faint: rgba(226, 229, 236, 0.9);
  --color-border-inverse-muted: rgba(255, 255, 255, 0.12);
  --color-bg-hover-soft: rgba(20, 20, 20, 0.05);

  --color-success: #166534;
  --color-success-bg: #eefdf4;
  --color-warning: #b45309;
  --color-warning-bg: #fffbeb;
  --color-error: #dc2626;
  --color-error-bg: #fff1f1;
  --color-info: #1d4ed8;
  --color-info-bg: #eff6ff;

  --color-shadow: rgba(15, 23, 42, 0.08);
  --color-shadow-soft: rgba(15, 23, 42, 0.04);
  --color-shadow-medium: rgba(20, 20, 20, 0.06);
  --color-shadow-strong: rgba(20, 20, 20, 0.1);

  --color-text-on-brand: #ffffff;
  --color-text-inverse: var(--color-text-on-brand);

  --color-btn-danger: var(--color-danger);
  --color-btn-danger-hover: #b91c1c;


  /* =========================================================
     TYPOGRAPHY TOKENS
  ========================================================= */

  /* FONT SIZE */
  --font-xs: 0.75rem;
  --font-sm: 0.875rem;
  --font-md: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-4xl: 2.25rem;
  --font-5xl: 3rem;
  --font-6xl: 4rem;

  /* FONT WEIGHT */
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* LINE HEIGHT */
  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;

  /* LETTER SPACING */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-widest: 0.11em;

  /* TEXT COLORS */
  --color-text-primary: var(--color-brand-primary);
  --color-text-secondary: var(--color-brand-secondary);
  --color-text-muted: #64748b;
  --color-text-placeholder: #b0b5c1;
  --color-text-disabled: #f5f5f5;
  --color-text-link: var(--color-brand-primary);
  --color-text-inverse-secondary: rgba(255, 255, 255, 0.8);
  --color-text-inverse-muted: rgba(255, 255, 255, 0.7);

  /* SHAPE */
  --radius-none: 0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 28px;
  --radius-full: 9999px;

  /* BORDER WIDTH */
  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-width-thick: 4px;

  /* SHADOWS */
  --shadow-sm: 0 1px 2px var(--color-shadow-soft);
  --shadow-md: 0 8px 24px var(--color-shadow-medium);
  --shadow-lg: 0 0 0 12px var(--color-border-faint), 0 8px 30px var(--color-shadow);
  --shadow-inner: inset 0 1px 2px var(--color-shadow-soft);

  /* OPACITY */
  --opacity-disabled: 0.5;
  --opacity-muted: 0.7;

  /* FOCUS RING */
  --focus-ring-width: 3px;
  --focus-ring-color: var(--color-border-focus);
  --focus-ring-shadow: 0 0 0 2px rgba(59, 130, 246, 0.16);

  /* LAYOUT */
  --header-height: 4.5rem;
  --sidebar-width: 15rem;
  --container-xs: 240px;
  --container-md: 480px;
  --container-lg: 900px;
  --container-2xl: 1160px;
  --content-width-xs: 360px;
  --content-width-sm: 430px;
  --content-width-md: 620px;
  --content-width-lg: 1100px;

  /* SPACING */
  --spacing-3xs: 0.25rem;
  --spacing-2xs: 0.5rem;
  --spacing-xs: 0.75rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* BLUR */
  --blur-sm: 4px;
  --blur-md: 10px;
  --blur-lg: 20px;

  /* Z-INDEX */
  --z-base: 0;
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-overlay: 30;
  --z-modal: 40;
  --z-popover: 50;
  --z-tooltip: 60;
  --z-toast: 70;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--color-bg-primary);
}

body {
  font-family: 'Plus Jakarta Sans', ui-sans-serif, system-ui, sans-serif;
  font-size: var(--font-md);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  word-spacing: 0.2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  word-spacing: inherit;
}

a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

a:hover,
a:active {
  text-decoration: none;
}

a:focus-visible,
button:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: 2px;
  border-radius: var(--radius-full);
}

input:focus-visible,
textarea:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: 2px;
  border-radius: var(--radius-md);
}

/* header and footer */

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: var(--spacing-xs) var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border-bottom: var(--border-width-thin) solid var(--color-border-muted);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
}

.header a {
  text-decoration: none;
}

.header-shell {
  gap: var(--spacing-md);
}

.header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  cursor: pointer;
}

.header-logo img {
  height: 28px;
  width: auto;
  cursor: pointer;
}

.header-nav-group {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.header-nav {
  font-size: var(--font-md);
  font-weight: var(--font-weight-medium);
  align-items: center;
  flex-wrap: wrap;
}

.header-nav a {
  color: var(--color-text-primary);
  text-decoration: none;
  padding: 0.62rem 0.85rem;
  border-radius: var(--radius-full);
}

.header-nav a:hover,
.header-nav a:active {
  background: var(--color-bg-hover);
}

.header-nav-btn {
  padding: 0.62rem 1rem !important;
  background: var(--color-brand-primary) !important;
  color: var(--color-text-inverse) !important;
  box-shadow: none;
}

.header-actions {
  justify-content: flex-end;
}

.header-actions[hidden] {
  display: none !important;
}

.header-user {
  position: relative;
}

.header-user[hidden] {
  display: none !important;
}

.header-avatar-btn {
  width: 2.5rem;
  height: 2.5rem;
  border: var(--border-width-thin) solid var(--color-border-muted);
  border-radius: var(--radius-full);
  background: var(--color-bg-secondary);
  padding: 0 0 0 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.header-avatar-btn:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-lg);
}

.header-avatar-btn:active {
  transform: none;
}

.header-avatar-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
}

.header-avatar-btn img.header-avatar-loaded {
  opacity: 1;
}

.header-user-menu {
  position: absolute;
  top: calc(100% + 0.9rem);
  right: 0;
  min-width: var(--container-xs);
  max-width: var(--content-width-xs);
  padding: 0.5rem 0.5rem 0.5rem 0.5rem;
  border: var(--border-width-thin) solid var(--color-border-faint);
  border-radius: var(--radius-lg);
  background: var(--color-bg-secondary);
  box-shadow: var(--shadow-lg);
  visibility: hidden;
  pointer-events: none;
  z-index: 20;
}

.header-user-menu.open {
  visibility: visible;
  pointer-events: auto;
}

.header-menu-user {
  padding: 0.85rem 0.9rem 0.8rem 0.9rem;
  border-bottom: var(--border-width-thin) solid var(--color-border-muted);
  margin-bottom: 0.35rem;
}

.header-menu-name {
  font-size: var(--font-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.header-menu-email {
  margin-top: 0.15rem;
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
  word-break: break-word;
}

.header-menu-item {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  padding: 0.58rem 0.9rem 0.58rem 0.9rem;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: var(--font-sm);
  font-weight: var(--font-weight-medium);
}

.header-menu-item.danger {
  color: var(--color-text-primary);
}

.header-menu-item.danger:hover {
  background: var(--color-bg-hover-soft);
}

.header-menu-divider {
  height: var(--border-width-thin);
  margin: 0.35rem 0.4rem 0.35rem 0.4rem;
  background: var(--color-border-muted);
}

.header-nav-btn:hover {
  background: var(--color-brand-primary-hover) !important;
  opacity: 1 !important;
}

.footer {
  margin-top: auto;
  border-top: var(--border-width-thin) solid var(--color-border-primary);
  padding: var(--spacing-2xl) var(--spacing-xl) var(--spacing-lg) var(--spacing-xl);
  background: var(--color-brand-primary);
}

.footer-inner {
  max-width: var(--content-width-lg);
  margin: 0 auto 0 auto;
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-2xl);
  flex-wrap: wrap;
}

.footer-brand {
  max-width: 310px;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-xs);
}

.footer-logo img {
  height: 24px;
  width: auto;
  filter: invert(1) brightness(1.05);
}

.footer-tagline {
  color: var(--color-text-inverse-muted);
  font-size: var(--font-md);
  font-weight: var(--font-weight-regular);
  margin-bottom: var(--spacing-md);
}

.footer-socials {
  display: flex;
  gap: 0.8rem;
}

.footer-socials a {
  width: auto;
  height: auto;
  padding: 0.2rem 0.2rem 0.2rem 0.2rem;
  color: var(--color-text-inverse-secondary);
  border: none;
  border-radius: 0;
  background: transparent;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-socials a:hover {
  color: var(--color-text-inverse);
  background: transparent;
}

.footer-socials a svg {
  width: 2.25rem;
  height: 2.25rem;
  display: block;
}

.footer-nav {
  display: flex;
  gap: 4.5rem;
}

.footer-column {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-3xs);
}

.footer-column h3 {
  font-size: var(--font-xs);
  color: var(--color-text-inverse-secondary);
  margin-bottom: 1.1rem;
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
}

.footer-column a {
  display: block;
  color: var(--color-text-inverse-muted);
  text-decoration: none;
  margin-bottom: 0.76rem;
  font-size: var(--font-md);
  font-weight: var(--font-weight-regular);
  letter-spacing: var(--letter-spacing-normal);
}

.footer-bottom {
  max-width: var(--content-width-lg);
  margin: var(--spacing-2xl) auto 0;
  padding-top: var(--spacing-lg);
  border-top: var(--border-width-thin) solid var(--color-border-inverse-muted);
  color: var(--color-text-inverse-muted);
  font-size: var(--font-sm);
  font-weight: var(--font-weight-regular);
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 767px) {
  .header {
    padding: 0.95rem 1rem;
    align-items: center;
    flex-direction: row;
    justify-content: space-between;
  }

  .header-nav-group {
    width: auto;
    align-items: center;
    justify-content: flex-end;
    gap: 0.6rem;
  }

  .header-nav {
    gap: 0.35rem;
    font-size: var(--font-sm);
  }

  .header-nav a {
    padding: 0.55rem 0.62rem;
  }

  .header-actions {
    width: auto;
  }

  .header-user {
    align-self: center;
  }

  .footer {
    padding: 3rem 1.25rem 2rem 1.25rem;
  }
}

@media (max-width: 1023px) {
  .footer-inner {
    display: block;
  }

  .footer-brand {
    margin-bottom: 3rem;
  }

  .footer-nav {
    display: block;
  }

  .footer-column {
    display: block;
  }

  .footer-column + .footer-column {
    margin-top: 3rem;
  }
}

divider {
  display: block;
  height: 2px;
  background: var(--color-border-primary);
  margin: var(--spacing-lg) 0;
  border: none;
}