/*
  ============================================================
  Personal Hub Page — style.css
  Author  : Marco Baturan
  Purpose : Responsive dark-theme styling for the link hub page
  Version : 1.0.0
  Date    : 2026-02-19
  ============================================================
*/

/* ===========================================================
   1. DESIGN TOKENS (CSS Custom Properties)
   Centralised values allow easy global theming.
   =========================================================== */
:root {
  /* Colour palette */
  --clr-bg: #0d0d0d;
  /* Page background */
  --clr-card: #1a1a2e;
  /* Card panel background */
  --clr-card-border: #2a2a4a;
  /* Card border subtle glow */
  --clr-btn: #22223b;
  /* Button background */
  --clr-btn-hover: #2d2d5a;
  /* Button hover background */
  --clr-btn-border: #3a3a6e;
  /* Button border */
  --clr-text: #e8e8f0;
  /* Primary text */
  --clr-text-muted: #9090b0;
  /* Secondary / muted text */
  --clr-accent: #7c6af7;
  /* Accent purple */
  --clr-accent-glow: rgba(124, 106, 247, 0.25);

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 1rem;

  /* Spacing */
  --spacing-xs: 0.375rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1.25rem;
  --spacing-lg: 2rem;

  /* Border radii */
  --radius-card: 1.5rem;
  /* Outer card */
  --radius-btn: 0.875rem;
  /* Rectangular buttons */
  --radius-icon: 50%;
  /* Circular icons */
  --radius-modal: 1.25rem;
  /* Share popup */
  --radius-badge: 50%;
  --radius-share: 50%;

  /* Shadows */
  --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.6);
  --shadow-btn: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-btn-hover: 0 6px 20px var(--clr-accent-glow);

  /* Transitions */
  --transition-fast: 0.18s ease;
  --transition-med: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --card-max-width: 420px;
}

/* ===========================================================
   2. CSS RESET & BASE STYLES
   =========================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100vh;
  line-height: 1.5;
  /* Subtle animated gradient background */
  background-image:
    radial-gradient(ellipse at top left, rgba(124, 106, 247, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at bottom right, rgba(64, 120, 247, 0.08) 0%, transparent 60%);
}

img {
  display: block;
  max-width: 100%;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===========================================================
   3. PAGE WRAPPER — centres card vertically and horizontally
   =========================================================== */
.page-wrapper {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: var(--spacing-lg) var(--spacing-md);
}

/* ===========================================================
   4. CARD — main container panel
   =========================================================== */
.card {
  width: 100%;
  max-width: var(--card-max-width);
  background: var(--clr-card);
  border: 1px solid var(--clr-card-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
  position: relative;
  /* Subtle inner glow */
  backdrop-filter: blur(2px);
}

/* ===========================================================
   5. CONTROLS ROW — badge (left) + share button (right)
   =========================================================== */
.controls-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

/* Decorative asterisk badge */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  background: var(--clr-btn);
  border: 1px solid var(--clr-btn-border);
  border-radius: var(--radius-badge);
  font-size: 1rem;
  color: var(--clr-accent);
  user-select: none;
}

/* Share button — small round button top-right */
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  background: var(--clr-btn);
  border: 1px solid var(--clr-btn-border);
  border-radius: var(--radius-share);
  color: var(--clr-text);
  transition: background var(--transition-fast), box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.share-btn svg {
  width: 1.1rem;
  height: 1.1rem;
}

.share-btn:hover,
.share-btn:focus-visible {
  background: var(--clr-btn-hover);
  box-shadow: var(--shadow-btn-hover);
  transform: scale(1.06);
  outline: 2px solid var(--clr-accent);
  outline-offset: 2px;
}

/* ===========================================================
   6. PROFILE SECTION — avatar, name, tagline
   =========================================================== */
.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

/* Circular avatar with accent border ring */
.avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--clr-accent);
  box-shadow: 0 0 0 4px var(--clr-accent-glow);
  margin-bottom: var(--spacing-sm);
  transition: box-shadow var(--transition-med), transform var(--transition-med);
}

.avatar:hover {
  transform: scale(1.04);
  box-shadow: 0 0 0 6px var(--clr-accent-glow);
}

.profile-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: 0.01em;
  margin-bottom: 0.35rem;
}

.profile-tagline {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ===========================================================
   7. LINK BUTTONS LIST
   =========================================================== */
.links-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Individual rectangular link button */
.link-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--clr-btn);
  border: 1px solid var(--clr-btn-border);
  border-radius: var(--radius-btn);
  /* Rounded corners per spec */
  padding: 0.65rem var(--spacing-sm);
  box-shadow: var(--shadow-btn);
  transition:
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast),
    border-color var(--transition-fast);
  position: relative;
  overflow: hidden;
}

/* Hover / focus state: lift + purple glow */
.link-btn:hover,
.link-btn:focus-visible {
  background: var(--clr-btn-hover);
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-2px);
  outline: none;
}

/* Shimmer sweep effect on hover */
.link-btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg,
      transparent 40%,
      rgba(255, 255, 255, 0.04) 50%,
      transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.link-btn:hover::after {
  transform: translateX(100%);
}

/* Circular icon — per spec icons must be round */
.btn-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-icon);
  /* Circular */
  object-fit: cover;
  flex-shrink: 0;
  border: 2px solid var(--clr-btn-border);
  transition: border-color var(--transition-fast);
}

.link-btn:hover .btn-icon {
  border-color: var(--clr-accent);
}

/* Button label text */
.btn-text {
  flex: 1;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--clr-text);
  line-height: 1.35;
}

/* Vertical dots / chevron icon */
.btn-chevron {
  font-size: 1.1rem;
  color: var(--clr-text-muted);
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.link-btn:hover .btn-chevron {
  opacity: 1;
}

/* ===========================================================
   8. CARD FOOTER — copyright notice
   =========================================================== */
.card-footer {
  margin-top: var(--spacing-lg);
  text-align: center;
}

.copyright {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  opacity: 0.6;
  letter-spacing: 0.02em;
}

/* ===========================================================
   9. MODAL OVERLAY — share popup backdrop
   =========================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  z-index: 1000;
  /* Hidden by default */
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-med);
}

/* Visible state toggled by JS */
.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

/* ===========================================================
   9. MODAL PANEL
   =========================================================== */
.modal {
  background: var(--clr-card);
  border: 1px solid var(--clr-card-border);
  border-radius: var(--radius-modal);
  /* Rounded per spec */
  padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
  width: 100%;
  max-width: 340px;
  position: relative;
  /* Slide-in animation */
  transform: translateY(24px) scale(0.97);
  transition: transform var(--transition-med);
  box-shadow: var(--shadow-card);
}

.modal-overlay.is-open .modal {
  transform: translateY(0) scale(1);
}

/* Close ✕ button */
.modal-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--clr-btn);
  border: 1px solid var(--clr-btn-border);
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover,
.modal-close:focus-visible {
  background: var(--clr-btn-hover);
  color: var(--clr-text);
  outline: 2px solid var(--clr-accent);
  outline-offset: 2px;
}

/* Profile preview inside modal */
.modal-profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.modal-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--clr-accent);
  margin-bottom: 0.5rem;
}

.modal-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--clr-text);
}

.modal-handle {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-top: 0.2rem;
}

/* Share options row inside modal */
.modal-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* Individual share action (button or anchor) */
.modal-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  background: var(--clr-btn);
  border: 1px solid var(--clr-btn-border);
  border-radius: 0.75rem;
  padding: 0.6rem 0.65rem;
  min-width: 3.5rem;
  transition:
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  color: var(--clr-text);
  cursor: pointer;
  font-size: 0.78rem;
}

.modal-action:hover,
.modal-action:focus-visible {
  background: var(--clr-btn-hover);
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-2px);
  outline: none;
}

.action-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.action-label {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--clr-text-muted);
}

/* Copy confirmation toast */
.copy-toast {
  text-align: center;
  font-size: 0.8rem;
  color: var(--clr-accent);
  margin-top: var(--spacing-sm);
  opacity: 0;
  transition: opacity var(--transition-med);
  min-height: 1.2rem;
}

.copy-toast.is-visible {
  opacity: 1;
}

/* ===========================================================
   10. RESPONSIVE BREAKPOINTS
       Mobile-first: base styles cover ≤ 480px
   =========================================================== */

/* --- Tablet: 481px – 768px --- */
@media (min-width: 481px) {
  .card {
    padding: var(--spacing-lg) var(--spacing-lg) calc(var(--spacing-lg) * 1.25);
  }

  .avatar {
    width: 108px;
    height: 108px;
  }

  .profile-name {
    font-size: 1.5rem;
  }

  .btn-text {
    font-size: 0.925rem;
  }
}

/* --- Desktop: ≥ 769px --- */
@media (min-width: 769px) {
  :root {
    --card-max-width: 460px;
  }

  .page-wrapper {
    align-items: center;
    /* Vertical centering on tall screens */
  }

  .card {
    padding: var(--spacing-lg) calc(var(--spacing-lg) * 1.25) calc(var(--spacing-lg) * 1.5);
  }

  .avatar {
    width: 120px;
    height: 120px;
  }

  .profile-name {
    font-size: 1.65rem;
  }

  .btn-icon {
    width: 48px;
    height: 48px;
  }

  .btn-text {
    font-size: 0.95rem;
  }
}

/* ===========================================================
   11. ACCESSIBILITY: reduced-motion preference
   =========================================================== */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}