/* === width variable (default 20vw; responsive at ≤1200px) === */
:root { --sidebar-w: 20vw; }

@media (max-width: 1200px) {
  :root {
    /* Shrinks smoothly but never below 100px */
    --sidebar-w: clamp(100px, 20vw, 340px);
  }
}

.sidebar-container {
  position: relative;
  z-index: 1000;
}

/* === SIDEBAR (always slides from LEFT) ==== */
.sidebar {
  position: fixed;
  top: 0;
  left: calc(-1 * var(--sidebar-w));   /* hidden off-screen to the left */
  width: var(--sidebar-w);             /* responsive width */
  height: 100vh;
  display: flex;
  flex-direction: column;
  color: #ffffff;

  background: linear-gradient(135deg,
    rgba(139, 0, 0, 0.8),
    rgba(178, 34, 34, 0.75),
    rgba(255, 0, 0, 0.7)
  );
  background-size: 300% 300%;
  animation: gradientMove 8s ease infinite;
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-right: 1px solid rgba(255,255,255,0.15);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);

  /* make content usable on short screens */
  overflow-y: auto;
  overscroll-behavior: contain;

  /* animate LEFT only (no right-side behavior) */
  right: auto !important;
  transition: left .45s ease-in-out;
}

.sidebar.active { left: 0; }

/* Animated bg */
@keyframes gradientMove {
  0%   { background-position: 0% 50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Header (fluid size + tighter padding on small screens) */
.sidebar-header {
  position: relative;
  padding: 20px;
  font-weight: 700;
  font-size: 1.1rem;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

/* Links layout */
.sidebar-nav {
  flex: 1;
  padding: clamp(10px, 1.6vw, 16px) 0;
  display: flex;
  flex-direction: column;
  gap: clamp(2px, 0.5vw, 6px);
}

.sidebar-nav a {
  color: #ffffff;
  text-decoration: none;

  /* fluid paddings */
  padding: clamp(8px, 1.2vw, 12px) clamp(12px, 1.4vw, 18px);
  margin: 0 clamp(8px, 1.2vw, 12px);
  border-radius: 10px;

  /* fluid type that won’t explode */
  font-size: clamp(0.85rem, 0.75vw + 0.55rem, 1rem);
  line-height: 1.2;

  /* keep single line + ellipsis so it fits narrow 20vw on phones */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;

  transition: transform .2s ease, box-shadow .25s ease, background .25s ease;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  background: rgba(255,255,255,0.14);
  box-shadow: 0 0 14px #ff4d4d;
  transform: translateX(4px);
}

/* Footer (fluid size + padding) */
.sidebar-footer {
  padding: clamp(10px, 1.6vw, 14px);
  text-align: center;
  font-size: clamp(0.8rem, 0.6vw + 0.55rem, 0.95rem);
  color: rgba(255,255,255,0.85);
  border-top: 1px solid rgba(255,255,255,0.12);
}

/* Hamburger (unchanged look/behavior) */
.hamburger {
  position: fixed;
  top: clamp(14px, 3.2vw, 35px);
  left: 18px;
  width: clamp(28px, 2.8vw + 16px, 34px);
  height: clamp(28px, 2.8vw + 16px, 34px);
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(4px, 0.5vw, 6px);
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  cursor: pointer;
  z-index: 1100;
  transition:
    left .45s ease-in-out,
    right .45s ease-in-out,
    transform .6s cubic-bezier(.2,.8,.2,1),
    background .25s ease,
    box-shadow .25s ease;
  box-shadow: 0 4px 18px rgba(0,0,0,0.28);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.hamburger:hover {
  background: rgba(0,0,0,0.35);
  box-shadow: 0 6px 22px rgba(0,0,0,0.32);
}

.hamburger span {
  width: clamp(18px, 2vw + 10px, 20px);
  height: 2.5px;
  margin: 0 auto;
  background: #fff;
  border-radius: 2px;
  transition: transform .35s ease, opacity .25s ease, background .25s ease;
}

.sidebar-action-btn {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease;
}

.sidebar-action-btn:hover {
  background: rgba(255,255,255,0.25);
  transform: scale(1.1);
}

.sidebar-action-btn:active {
  transform: scale(0.95);
}

.sidebar-close-btn {
  position: absolute;
  top: 20px;
  right: 14px;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 8px;
  background: rgba(255,255,255,0.15);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.25s ease;
}

.sidebar-close-btn:hover {
  background: rgba(255,255,255,0.25);
  transform: scale(1.1);
}

.sidebar-close-btn:active {
  transform: scale(0.95);
}

/* When sidebar is open (LEFT slide layout) */
.sidebar-container.open .hamburger {
  left: calc(var(--sidebar-w) - 24px); /* follows responsive width */
  right: auto !important;
  transform: rotate(540deg);
  background: rgba(255, 77, 77, 0.25);
}
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); background: #ff4d4d; }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); background: #ff4d4d; }

/* ===== Fit text inside sidebar at ≤820px ===== */
@media (max-width: 820px) {
  /* Slightly smaller header + tighter padding */
  .sidebar-header {
    padding: 14px 16px;
    font-size: clamp(0.95rem, 0.7rem + 0.8vw, 1.05rem);
  }

  /* Make the nav column a bit denser */
  .sidebar-nav {
    padding: 8px 0;
    gap: 4px;
  }

  .sidebar-nav a {
    font-size: clamp(0.72rem, 0.58rem + 0.8vw, 0.9rem);
    line-height: 1.25;

    padding: 8px 12px;
    margin: 0 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* Slightly smaller footer text */
  .sidebar-footer {
    padding: 10px;
    font-size: clamp(0.72rem, 0.56rem + 0.7vw, 0.86rem);
  }
}

@media (max-width: 600px) {
  .sidebar-nav a {
    font-size: clamp(0.68rem, 0.54rem + 0.8vw, 0.84rem);
    padding: 7px 10px;
    margin: 0 7px;
  }
  .sidebar-header { font-size: clamp(0.9rem, 0.68rem + 1vw, 1rem); }
  .sidebar-footer { font-size: clamp(0.68rem, 0.52rem + 0.7vw, 0.82rem); }
}

/* Optional: hide both on ultra-small devices */
@media (max-width: 360px) {
  .sidebar, .hamburger { display: none !important; }
}

/* Prevent horizontal scroll during slide */
html, body { overflow-x: hidden; }