/* =========================================================================
   KHALED — Personal Page
   Liquid-glass / Apple-inspired aesthetic.

   QUICK EDIT GUIDE
   -----------------------------------------------------------------------
   Colors & tokens ......... see ":root" block right below
   Name / tagline .......... index.html  (.name / .tagline)
   Song title / artist ..... index.html  (#trackTitle / #trackArtist)
   Audio file .............. index.html  (<audio src="track.mp3">)
   Album art ............... index.html  (<img src="album-art.svg">)
   Telegram link ........... index.html  (.telegram-btn href)
   ========================================================================= */

:root{
  /* ---- Core palette (edit these to re-theme the whole site) ---- */
  --bg-deep:        #05060a;
  --bg-deep-2:      #0a0d16;
  --accent-blue:    #6ea8ff;
  --accent-violet:  #a48bff;
  --accent-silver:  #cfd6e6;

  --ink:            #f3f5f9;
  --ink-soft:       rgba(243, 245, 249, 0.66);
  --ink-faint:      rgba(243, 245, 249, 0.38);

  /* ---- Glass surface tokens ---- */
  --glass-fill:      rgba(255, 255, 255, 0.055);
  --glass-fill-hi:    rgba(255, 255, 255, 0.09);
  --glass-border:    rgba(255, 255, 255, 0.14);
  --glass-border-hi: rgba(255, 255, 255, 0.28);
  --glass-blur:      22px;
  --glass-shadow:    0 20px 60px -20px rgba(0, 0, 0, 0.65), 0 2px 0 0 rgba(255,255,255,0.03) inset;

  /* ---- Layout ---- */
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --gap: clamp(1rem, 3vw, 1.6rem);

  --ease-glass: cubic-bezier(0.22, 1, 0.36, 1);
}

/* =========================================================================
   Reset & base
   ========================================================================= */
*, *::before, *::after{ box-sizing: border-box; }

html{
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
}

body{
  margin: 0;
  min-height: 100svh;
  min-height: 100dvh;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: var(--bg-deep);
  color: var(--ink);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

button{
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

a{ color: inherit; text-decoration: none; -webkit-tap-highlight-color: transparent; }

:focus-visible{
  outline: 2px solid var(--accent-blue);
  outline-offset: 3px;
  border-radius: 8px;
}

/* =========================================================================
   Background — layered blurred gradient blobs
   ========================================================================= */
.bg{
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 50% -10%, #0d1120 0%, var(--bg-deep) 55%),
    var(--bg-deep-2);
}

.blob{
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.55;
  will-change: transform;
}

.blob--blue{
  width: min(60vw, 620px);
  height: min(60vw, 620px);
  left: -10%;
  top: -12%;
  background: radial-gradient(circle at 35% 35%, var(--accent-blue), transparent 70%);
  animation: drift-a 26s ease-in-out infinite;
}

.blob--violet{
  width: min(55vw, 560px);
  height: min(55vw, 560px);
  right: -14%;
  top: 8%;
  background: radial-gradient(circle at 60% 40%, var(--accent-violet), transparent 70%);
  animation: drift-b 32s ease-in-out infinite;
}

.blob--silver{
  width: min(50vw, 480px);
  height: min(50vw, 480px);
  left: 20%;
  bottom: -18%;
  background: radial-gradient(circle at 50% 50%, var(--accent-silver), transparent 70%);
  opacity: 0.28;
  animation: drift-c 30s ease-in-out infinite;
}

@keyframes drift-a{
  0%, 100%   { transform: translate(0, 0) scale(1); }
  50%        { transform: translate(4%, 6%) scale(1.06); }
}
@keyframes drift-b{
  0%, 100%   { transform: translate(0, 0) scale(1); }
  50%        { transform: translate(-5%, 4%) scale(1.04); }
}
@keyframes drift-c{
  0%, 100%   { transform: translate(0, 0) scale(1); }
  50%        { transform: translate(3%, -5%) scale(1.05); }
}

.bg__grain{
  position: absolute;
  inset: 0;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.bg__vignette{
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 80% at 50% 60%, transparent 40%, rgba(2,3,6,0.55) 100%);
}

/* =========================================================================
   Stage / layout
   ========================================================================= */
.stage{
  position: relative;
  z-index: 1;
  min-height: 100svh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(1.5rem, 6vh, 3.5rem) clamp(1.1rem, 5vw, 2rem);
  gap: clamp(1.5rem, 4vh, 2.5rem);
}

.card-stack{
  width: min(92vw, 440px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1.1rem, 3vh, 1.6rem);
}

/* =========================================================================
   Identity — name & tagline
   ========================================================================= */
.identity{
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.9rem;
}

.avatar-ring{
  width: clamp(52px, 12vw, 68px);
  height: clamp(52px, 12vw, 68px);
  border-radius: 50%;
  position: relative;
  background: linear-gradient(155deg, rgba(255,255,255,0.16), rgba(255,255,255,0.02));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  display: grid;
  place-items: center;
}
.avatar-ring::before{
  content: "";
  width: 60%;
  height: 60%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--accent-blue), var(--accent-violet) 70%, transparent 100%);
  filter: saturate(1.1);
  opacity: 0.9;
}
.avatar-ring__glass{
  position: absolute;
  inset: -1px;
  border-radius: 50%;
  background: linear-gradient(120deg, rgba(255,255,255,0.35), transparent 40%);
  pointer-events: none;
}

.name{
  margin: 0;
  font-family: 'Bricolage Grotesque', 'Inter', sans-serif;
  font-weight: 700;
  font-size: clamp(3.2rem, 13vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.name__sheen{
  display: inline-block;
  background: linear-gradient(100deg,
    #d9e2f5 0%,
    #ffffff 22%,
    var(--accent-blue) 42%,
    #ffffff 58%,
    var(--accent-violet) 75%,
    #d9e2f5 100%
  );
  background-size: 260% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: sheen-sweep 7s ease-in-out infinite;
  filter: drop-shadow(0 6px 30px rgba(110, 168, 255, 0.18));
}

@keyframes sheen-sweep{
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.tagline{
  margin: 0;
  font-size: clamp(0.95rem, 2.4vw, 1.05rem);
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

/* =========================================================================
   Shared glass surface
   ========================================================================= */
.glass{
  position: relative;
  background: var(--glass-fill);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--glass-shadow);
  isolation: isolate;
  overflow: hidden;
}

.glass::before{
  /* top highlight — simulates light hitting curved glass */
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(160deg, rgba(255,255,255,0.14) 0%, rgba(255,255,255,0) 32%);
  pointer-events: none;
}

/* =========================================================================
   Music player
   ========================================================================= */
.player{
  width: 100%;
  padding: clamp(1.1rem, 4vw, 1.5rem);
  display: flex;
  flex-direction: column;
  gap: clamp(0.9rem, 3vw, 1.15rem);
}

.player__row{
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.player__art{
  position: relative;
  width: clamp(52px, 14vw, 64px);
  height: clamp(52px, 14vw, 64px);
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 22px -10px rgba(0,0,0,0.6);
  transition: transform 0.5s var(--ease-glass);
}
.player__art img{
  width: 100%; height: 100%; object-fit: cover;
}
.player__art-sheen{
  position: absolute; inset: 0;
  background: linear-gradient(140deg, rgba(255,255,255,0.25), transparent 45%);
}
.player.is-playing .player__art{
  animation: art-pulse 3.6s ease-in-out infinite;
}
@keyframes art-pulse{
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.035); }
}

.player__meta{
  min-width: 0;
  flex: 1;
}
.player__title{
  margin: 0;
  font-size: clamp(0.98rem, 2.6vw, 1.08rem);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.player__artist{
  margin: 0.2rem 0 0;
  font-size: clamp(0.82rem, 2.2vw, 0.9rem);
  color: var(--ink-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.icon-btn{
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  flex-shrink: 0;
  transition: background 0.25s var(--ease-glass), color 0.25s var(--ease-glass), transform 0.2s var(--ease-glass);
}
.icon-btn:hover{ background: rgba(255,255,255,0.08); color: var(--ink); }
.icon-btn:active{ transform: scale(0.92); }
.icon-btn .icon{ width: 20px; height: 20px; fill: currentColor; }

.wave{ opacity: 1; transition: opacity 0.25s ease; }
.icon-btn[aria-pressed="true"] .wave{ opacity: 0.25; }

.volume-panel{
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--ease-glass), opacity 0.3s var(--ease-glass), margin 0.35s var(--ease-glass);
}
.volume-panel.is-open{
  max-height: 48px;
  opacity: 1;
  margin-top: -0.3rem;
}
.volume-slider{
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 4px;
  background: rgba(255,255,255,0.14);
  outline: none;
  cursor: pointer;
}
.volume-slider::-webkit-slider-thumb{
  -webkit-appearance: none;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(110,168,255,0.22);
  cursor: pointer;
}
.volume-slider::-moz-range-thumb{
  width: 15px; height: 15px;
  border: none;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(110,168,255,0.22);
  cursor: pointer;
}

.player__progress-row{
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.player__time{
  font-size: 0.75rem;
  color: var(--ink-faint);
  font-variant-numeric: tabular-nums;
  width: 2.4em;
  flex-shrink: 0;
}
.player__time:last-of-type{ text-align: right; }

.progress{
  flex: 1;
  padding: 10px 0;
  cursor: pointer;
}
.progress__track{
  position: relative;
  height: 4px;
  border-radius: 4px;
  background: rgba(255,255,255,0.12);
  overflow: visible;
}
.progress__fill{
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-violet));
  transition: width 0.1s linear;
}
.progress__handle{
  position: absolute;
  top: 50%;
  left: 0%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(110,168,255,0.22), 0 2px 6px rgba(0,0,0,0.4);
  transform: translate(-50%, -50%);
  transition: left 0.1s linear, box-shadow 0.25s ease;
}
.progress:hover .progress__handle,
.progress:focus-visible .progress__handle{
  box-shadow: 0 0 0 6px rgba(110,168,255,0.3), 0 2px 6px rgba(0,0,0,0.4);
}

.player__controls{
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.1rem, 5vw, 1.6rem);
}

.ctrl-btn{
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  transition: color 0.25s var(--ease-glass), transform 0.2s var(--ease-glass), background 0.25s var(--ease-glass);
}
.ctrl-btn .icon{ width: 22px; height: 22px; fill: currentColor; }
.ctrl-btn:hover{ color: var(--ink); background: rgba(255,255,255,0.07); }
.ctrl-btn:active{ transform: scale(0.9); }

.play-btn{
  position: relative;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(155deg, rgba(255,255,255,0.22), rgba(255,255,255,0.05));
  border: 1px solid var(--glass-border-hi);
  box-shadow: 0 10px 30px -10px rgba(110,168,255,0.35), inset 0 1px 0 rgba(255,255,255,0.25);
  color: var(--ink);
  transition: transform 0.2s var(--ease-glass);
}
.play-btn .icon{ width: 24px; height: 24px; fill: currentColor; }
.icon--play{ margin-left: 3px; }
.play-btn:hover{ transform: scale(1.05); }
.play-btn:active{ transform: scale(0.95); }

.play-btn__glow{
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110,168,255,0.45), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.player.is-playing .play-btn__glow{
  opacity: 1;
  animation: glow-pulse 2.4s ease-in-out infinite;
}
@keyframes glow-pulse{
  0%, 100% { opacity: 0.45; transform: scale(1); }
  50%      { opacity: 0.85; transform: scale(1.12); }
}

/* =========================================================================
   Telegram button
   ========================================================================= */
.telegram-btn{
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.95rem 1.3rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: clamp(0.92rem, 2.4vw, 1rem);
  color: var(--ink);
  transition: transform 0.22s var(--ease-glass), box-shadow 0.3s var(--ease-glass), background 0.3s var(--ease-glass);
}

.telegram-btn:hover{
  background: var(--glass-fill-hi);
  box-shadow: var(--glass-shadow), 0 0 0 1px var(--glass-border-hi), 0 0 34px -8px rgba(110,168,255,0.35);
}
.telegram-btn:active{ transform: scale(0.98); }

.telegram-btn__sheen{
  position: absolute;
  top: 0; left: -60%;
  width: 45%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,0.18), transparent);
  transform: skewX(-18deg);
  transition: left 0.7s var(--ease-glass);
  pointer-events: none;
}
.telegram-btn:hover .telegram-btn__sheen{ left: 130%; }

.telegram-icon{
  width: 22px; height: 22px;
  color: var(--accent-blue);
  flex-shrink: 0;
}
.telegram-btn__label{ flex: 1; }
.telegram-arrow{
  width: 17px; height: 17px;
  color: var(--ink-faint);
  transition: transform 0.25s var(--ease-glass);
  flex-shrink: 0;
}
.telegram-btn:hover .telegram-arrow{ transform: translateX(3px); color: var(--ink-soft); }

/* =========================================================================
   Footnote
   ========================================================================= */
.footnote{
  font-size: 0.78rem;
  color: var(--ink-faint);
  text-align: center;
  margin: 0;
}

/* =========================================================================
   Reveal-on-load animation
   ========================================================================= */
[data-reveal]{
  opacity: 0;
  transform: translateY(16px);
  animation: reveal 0.9s var(--ease-glass) forwards;
}
.identity{ animation-delay: 0.05s; }
.player{ animation-delay: 0.2s; }
.telegram-btn{ animation-delay: 0.34s; }
.footnote{ animation-delay: 0.5s; }

@keyframes reveal{
  to{ opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   Responsive tweaks
   ========================================================================= */
@media (max-width: 380px){
  .player__controls{ gap: 1rem; }
  .play-btn{ width: 56px; height: 56px; }
}

@media (min-width: 640px){
  .card-stack{ width: min(88vw, 460px); }
}

@media (min-width: 1024px){
  .card-stack{ width: 460px; }
  .stage{ gap: 2.4rem; }
}

/* short / landscape phones: tighten vertical rhythm */
@media (max-height: 560px) and (orientation: landscape){
  .stage{ padding-top: 1rem; padding-bottom: 1rem; gap: 1rem; }
  .name{ font-size: clamp(2.4rem, 8vh, 3.4rem); }
  .avatar-ring{ display: none; }
  .card-stack{ gap: 0.8rem; }
}

/* =========================================================================
   Reduced motion
   ========================================================================= */
@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal]{ opacity: 1; transform: none; }
  .blob{ animation: none; }
}