/* assets/css/components.css */
/* Scope: reusable UI components (buttons, inputs, cards, pills, headings) */

/* -----------------------------
   Headings (class-based)
----------------------------- */
.h1 {
  font-size: var(--fs-4);
  font-weight: var(--fw-bold);
  margin: 0;
  letter-spacing: -0.2px;
}

.h2 {
  font-size: var(--fs-2);
  font-weight: var(--fw-bold);
  margin: 0;
}

/* -----------------------------
   Card
----------------------------- */
.card {
  background: var(--surface-1);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  border: 1px solid var(--border-soft);
  box-shadow: var(--shadow-1);
}
/* materials list: clickable cards should not show ugly link focus/tap artifacts */
.material-card {
  -webkit-tap-highlight-color: transparent; /* iOS tap flash */
  text-decoration: none;
  color: inherit;
}

.material-card:focus,
.material-card:focus-visible {
  outline: none;
}
/* -----------------------------
   Input / Select
----------------------------- */
.input {
  width: 100%;
  height: var(--control-h);
  padding: 0 var(--control-pad-x);
  border-radius: var(--control-radius);
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-main);
  font-size: 16px;
}

.input:focus-visible {
  border-color: rgba(226, 180, 0, 0.65);
  box-shadow: var(--focus-ring);
}
.input--center {
  text-align: center;
}
.input:disabled {
  opacity: 0.65;
  background: var(--surface-2);
  cursor: not-allowed;
}

/* textarea (if needed later) */
.textarea {
  width: 100%;
  min-height: 120px;
  padding: var(--space-3);
  border-radius: var(--control-radius);
  border: 1px solid var(--border);
  background: var(--surface-1);
  color: var(--text-main);
  resize: vertical;
   font-size: 16px;

  resize: vertical;
}

.textarea:focus-visible {
  border-color: rgba(226, 180, 0, 0.65);
  box-shadow: var(--focus-ring);
}

/* -----------------------------
   Button
----------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  height: var(--control-h);
  padding: 0 var(--space-4);
  border-radius: var(--control-radius);

  font-size: var(--fs-2);
  font-weight: var(--fw-bold);

  user-select: none;
  border: 1px solid transparent;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease, border-color 120ms ease;
}
.btn:active {
  transform: translateY(1px);
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.btn--primary {
  background: var(--accent);
  color: #111;
  box-shadow: var(--shadow-1);
}

.btn--primary:hover {
  filter: brightness(0.98);
}

.btn--primary:focus-visible {
  box-shadow: var(--shadow-1), var(--focus-ring);
}

.btn--secondary {
  background: var(--surface-2);
  color: var(--text-main);
  border-color: var(--border);
}

.btn--secondary:focus-visible {
  box-shadow: var(--focus-ring);
}

.btn--ghost {
  background: transparent;
  color: var(--text-main);
  border-color: var(--border);
}

.btn--ghost:hover {
  background: rgba(31, 31, 31, 0.04);
}

.btn--ghost:focus-visible {
  box-shadow: var(--focus-ring);
}

/* -----------------------------
   Pill / Badge
----------------------------- */
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  height: 28px;
  padding: 0 var(--space-3);

  border-radius: 999px;
  border: 1px solid var(--border-soft);
  background: var(--surface-2);
  color: var(--text-main);
  font-size: var(--fs-1);
  font-weight: var(--fw-bold);
}

.pill--accent {
  background: rgba(226, 180, 0, 0.18);
  color: #111;
}

/* -----------------------------
   Topbar (light header)
----------------------------- */
.topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
     gap: var(--space-3);
  }
}
/* -----------------------------
   Bottom Nav (mobile-first)
   ----------------------------- */
.calc-bottom-nav {
  position: fixed;
  left: 0; right: 0; bottom: 0;

  display: flex;
  gap: 6px;

  padding: 10px 10px calc(12px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, 0.92);
  border-top: 1px solid var(--border-soft);
  backdrop-filter: blur(8px);

  z-index: 9999;
}

.bn-item {
  flex: 1 1 0;

  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;

  text-decoration: none;
  color: var(--text-main);

  border: 1px solid var(--border-soft);
  background: var(--surface-1);
  border-radius: var(--radius-md);

  padding: 10px 6px;
  min-height: 54px;

  box-shadow: 0 1px 2px rgba(0,0,0,.04);
  user-select: none;
  -webkit-tap-highlight-color: transparent;

  transition: transform 120ms ease, border-color 120ms ease, box-shadow 120ms ease, background 120ms ease;
}

.bn-ico {
  font-size: 18px;
  line-height: 1;
}

.bn-txt {
  font-size: var(--fs-1);
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: var(--fw-medium);
}

.bn-item.is-active {
  border-color: rgba(226, 180, 0, 0.55);
  box-shadow: 0 1px 2px rgba(0,0,0,.04), var(--focus-ring);
}

.bn-item.is-active .bn-txt {
  color: var(--text-main);
  font-weight: var(--fw-bold);
}

/* Home is the anchor */
.bn-home {
  transform: translateY(-6px);
  border-color: rgba(31, 31, 31, 0.25);
}

.bn-home .bn-ico { font-size: 20px; }
.bn-home .bn-txt { font-weight: var(--fw-bold); color: var(--text-main); }

/* Hide on larger screens */
@media (min-width: 900px) {
  .calc-bottom-nav { display: none; }
}
/* -----------------------------------------
   Bottom Nav (Telegram / Liquid Glass)
   - نیمه‌شفاف واقعی
   - blur قابل تنظیم
   - سازگار با touch peek
------------------------------------------ */

:root{
  /* شفافیت پس‌زمینه (کمتر = شیشه‌ای‌تر) */
  --bn-bg-alpha: 0.5;

  /* شدت بلور */
  --bn-blur: 20px;

  /* سایه کلی */
  --bn-shadow: 0 14px 35px rgba(0,0,0,.12);

  /* پس‌زمینه active */
  --bn-active-bg: rgba(0,0,0,0.06);
}

.calc-bottom-nav{
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  z-index: 999;

  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;

  padding: 8px;
  border-radius: 18px;

  background: rgba(255, 255, 255, var(--bn-bg-alpha));
  border: 1px solid rgba(0, 0, 0, 0.06);

  -webkit-backdrop-filter: blur(var(--bn-blur));
  backdrop-filter: blur(var(--bn-blur));

  box-shadow: var(--bn-shadow);
  overflow: hidden;
}

/* هایلایت شیشه‌ای خیلی ملایم */
.calc-bottom-nav::before{
  content:"";
  position:absolute;
  inset: 0;
  pointer-events:none;
  background:
    linear-gradient(
      180deg,
      rgba(255,255,255,0.55),
      rgba(255,255,255,0.10) 55%,
      rgba(255,255,255,0.00)
    );
}

/* fallback برای مرورگرهای بدون blur */
@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))){
  .calc-bottom-nav{
    background: rgba(255,255,255,0.92);
  }
  .calc-bottom-nav::before{
    display:none;
  }
}

/* -----------------------------------------
   Nav Item
------------------------------------------ */

.calc-bottom-nav .bn-item{
  position: relative;

  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;

  gap: 4px;
  padding: 10px 6px;
  border-radius: 14px;

  text-decoration:none;
  user-select:none;
  -webkit-tap-highlight-color: transparent;

  color: rgba(0,0,0,0.62);

  transition:
    transform .12s ease,
    background-color .12s ease,
    color .12s ease;
}

.calc-bottom-nav .bn-ico{
  font-size: 18px;
  line-height:1;
}

.calc-bottom-nav .bn-txt{
  font-size: 11px;
  line-height:1;
  white-space:nowrap;
  opacity:.95;
}

/* Active page */
.calc-bottom-nav .bn-item.is-active{
  color: rgba(0,0,0,0.92);
  background: var(--bn-active-bg);
}

/* indicator تلگرام‌طور */
.calc-bottom-nav .bn-item.is-active::after{
  content:"";
  position:absolute;
  bottom: 6px;
  width: 22px;
  height: 4px;
  border-radius: 999px;
  background: rgba(0,0,0,0.22);
}

/* Home کمی برجسته‌تر */
.calc-bottom-nav .bn-item.bn-home{
  transform: translateY(-2px);
}

/* tap feedback */
.calc-bottom-nav .bn-item:active{
  transform: scale(0.98);
}

/* -----------------------------------------
   Touch Peek (Drag like Telegram)
------------------------------------------ */

.calc-bottom-nav .bn-item.is-peek{
  background: rgba(0,0,0,0.08);
  transform: scale(0.96);
}

/* جلوگیری از انتخاب متن هنگام drag */
.calc-bottom-nav,
.calc-bottom-nav *{
  -webkit-user-select: none;
  user-select: none;
}

/* -----------------------------------------
   Small phones
------------------------------------------ */

@media (max-width: 360px){
  .calc-bottom-nav{
    left: 10px;
    right: 10px;
    padding: 7px;
    border-radius: 16px;
  }
  .calc-bottom-nav .bn-item{
    padding: 9px 5px;
  }
  .calc-bottom-nav .bn-txt{
    font-size: 10px;
  }
}
[hidden] { display: none !important; }
.toast{
  position: fixed;
  left: 12px;
  right: 12px;
  top: calc(10px + env(safe-area-inset-top));
  z-index: 9999;

  padding: 12px 14px;
  border-radius: 14px;

  /* Liquid glass */
  background: rgba(255,255,255,.72);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);

  border: 1px solid rgba(0,0,0,.08);
  box-shadow: 0 16px 40px rgba(0,0,0,.12);

  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}

.toast.is-show{
  opacity: 1;
  transform: translateY(0);
}

.toast--ok{
  border-color: rgba(34, 197, 94, .35);
}
@media (prefers-color-scheme: dark){
  .toast{
    background: rgba(20,20,20,.72);
    border-color: rgba(255,255,255,.10);
    color: rgba(255,255,255,.92);
  }
}

/* اگر blur پشتیبانی نشود */
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))){
  .toast{
    background: rgba(255,255,255,.95);
  }
}