/* =========================
   MyPeriod.online - style.css
   Mobile-first, responsive, accessible
========================= */

:root{
  --bg: #ffffff;
  --surface: #ffffff;
  --text: #222222;
  --muted: #5a5a5a;
  --border: #e8e8e8;

  --primary: #FF69B4;
  --primary-2: #FFB6D9;
  --secondary: #E6E6FA;
  --secondary-2: #D8BFD8;
  --accent: #B76E79;

  --success: #1f9d55;
  --danger: #d64545;
  --info: #2f6fed;

  --shadow: 0 10px 25px rgba(0,0,0,0.08);
  --shadow-hover: 0 16px 35px rgba(0,0,0,0.12);

  --radius: 16px;
  --radius-sm: 12px;

  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 48px;

  --container: 1120px;

  --focus: 2px solid #2f6fed;
}

[data-theme="dark"]{
  --bg: #1a1a1a;
  --surface: #222222;
  --text: #eaeaea;
  --muted: #b9b9b9;
  --border: #333333;
  --shadow: 0 10px 25px rgba(0,0,0,0.45);
  --shadow-hover: 0 18px 40px rgba(0,0,0,0.6);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; height: auto; display: block; }

.container{
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:0;
  background: var(--info);
  color:#fff;
  padding: 10px 12px;
  border-radius: 10px;
  z-index: 9999;
}
.skip-link:focus{ left: 12px; top: 12px; outline: var(--focus); }

/* ============ Header / Nav ============ */
.site-header{
  position: sticky;
  top:0;
  z-index: 1000;
  transition: background .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
  background: rgba(255,255,255,0.65);
  backdrop-filter: blur(12px);
}
[data-theme="dark"] .site-header{
  background: rgba(26,26,26,0.75);
}
.site-header.is-solid{
  border-bottom-color: var(--border);
  background: var(--surface);
}

.navbar{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: 12px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: .2px;
}
.logo-badge{
  width: 38px;
  height: 38px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--secondary-2));
  box-shadow: var(--shadow);
}
.brand small{ display:block; font-weight: 600; color: var(--muted); margin-top: -4px; }

.nav-right{
  display:flex;
  align-items:center;
  gap: 10px;
}

.nav-links{
  display:flex;
  align-items:center;
  gap: 14px;
}
.nav-links a{
  position: relative;
  padding: 10px 10px;
  border-radius: 10px;
  color: var(--text);
}
.nav-links a:hover{ background: rgba(255,105,180,0.10); }
.nav-links a[aria-current="page"]{
  background: rgba(183,110,121,0.16);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left: 10px;
  right: 10px;
  bottom: 6px;
  height: 2px;
  background: transparent;
  border-radius: 10px;
  transition: background .2s ease;
}
.nav-links a:hover::after{ background: rgba(255,105,180,0.45); }
.nav-links a[aria-current="page"]::after{ background: var(--accent); }

.icon-btn{
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
  cursor:pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  box-shadow: none;
}
.icon-btn:hover{ transform: translateY(-1px); box-shadow: var(--shadow); }
.icon-btn:focus{ outline: var(--focus); outline-offset: 2px; }

.select{
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 12px;
  padding: 10px 12px;
}
.select:focus{ outline: var(--focus); outline-offset: 2px; }

.hamburger{
  display:none;
}

/* Mobile menu drawer */
.mobile-drawer{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display:none;
  z-index: 1200;
}
.mobile-drawer.open{ display:block; }
.drawer-panel{
  position:absolute;
  right:0;
  top:0;
  height:100%;
  width: min(360px, 88vw);
  background: var(--surface);
  padding: 16px;
  box-shadow: var(--shadow-hover);
  transform: translateX(0);
}
.drawer-panel header{
  display:flex;
  align-items:center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.drawer-links{
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.drawer-links a{
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.drawer-links a:hover{ background: rgba(255,105,180,0.10); }

/* ============ Hero ============ */
.hero{
  padding: clamp(44px, 6vw, 84px) 0;
  background:
    radial-gradient(700px 300px at 20% 10%, rgba(255,105,180,0.28), transparent 60%),
    radial-gradient(700px 340px at 80% 15%, rgba(230,230,250,0.55), transparent 60%),
    linear-gradient(135deg, rgba(255,182,217,0.25), rgba(216,191,216,0.25));
}
.hero-grid{
  display:grid;
  gap: 22px;
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
}
.hero h1{
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
  margin: 0 0 10px;
  letter-spacing: -0.5px;
}
.hero p{
  margin: 0 0 18px;
  color: var(--muted);
  max-width: 58ch;
}
.hero-card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.badge-row{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.badge{
  font-size: 14px;
  padding: 8px 10px;
  border: 1px dashed rgba(183,110,121,0.35);
  border-radius: 999px;
  background: rgba(255,105,180,0.08);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid transparent;
  cursor:pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
  font-weight: 700;
}
.btn:focus{ outline: var(--focus); outline-offset: 2px; }
.btn-primary{
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-primary:hover{ transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-ghost{
  background: transparent;
  border-color: var(--border);
}
.btn-ghost:hover{ background: rgba(255,105,180,0.10); transform: translateY(-1px); }

/* ============ Sections ============ */
.section{
  padding: var(--space-5) 0;
}
.section h2{
  margin: 0 0 14px;
  font-size: clamp(22px, 2.4vw, 34px);
}
.section .lead{
  margin: 0 0 22px;
  color: var(--muted);
  max-width: 78ch;
}

.grid{
  display:grid;
  gap: 16px;
}
.tools-grid{
  grid-template-columns: repeat(3, 1fr);
}

.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease;
}
.card:hover{ transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.card h3{ margin: 10px 0 8px; }
.card p{ margin: 0 0 14px; color: var(--muted); }

.icon{
  width: 46px;
  height: 46px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255,105,180,0.18), rgba(230,230,250,0.75));
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 900;
  color: var(--accent);
  border: 1px solid rgba(183,110,121,0.18);
}

.meta-row{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.pill{
  font-size: 13px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(47,111,237,0.10);
  border: 1px solid rgba(47,111,237,0.16);
}

/* ============ FAQ Accordion ============ */
.accordion{
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.acc-item{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
}
.acc-btn{
  width:100%;
  text-align:left;
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: var(--text);
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 12px;
  cursor:pointer;
  font-weight: 800;
}
.acc-btn:focus{ outline: var(--focus); outline-offset: -2px; }
.acc-panel{
  padding: 0 16px 14px;
  color: var(--muted);
  display:none;
}
.acc-item.open .acc-panel{ display:block; }
.acc-icon{
  width: 30px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid var(--border);
  display:flex;
  align-items:center;
  justify-content:center;
}

/* ============ Forms & Results ============ */
.form{
  display:grid;
  gap: 12px;
}
.form-row{
  display:grid;
  gap: 12px;
  grid-template-columns: 1fr 1fr;
}
.field{
  display:flex;
  flex-direction: column;
  gap: 6px;
}
label{ font-weight: 700; }
input, textarea, select{
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 12px 12px;
  border-radius: 12px;
  font: inherit;
}
textarea{ min-height: 120px; resize: vertical; }
input:focus, textarea:focus, select:focus{ outline: var(--focus); outline-offset: 2px; }

.help{ font-size: 13px; color: var(--muted); }
.error{ font-size: 13px; color: var(--danger); display:none; }
.field.invalid .error{ display:block; }

.result{
  margin-top: 12px;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(230,230,250,0.25);
}
.result .title{
  font-weight: 900;
  margin-bottom: 6px;
}
.notice{
  border-left: 4px solid var(--info);
  padding: 12px 12px;
  background: rgba(47,111,237,0.08);
  border-radius: 12px;
  margin-top: 10px;
}
.notice.warn{ border-left-color: var(--danger); background: rgba(214,69,69,0.08); }
.notice.success{ border-left-color: var(--success); background: rgba(31,157,85,0.08); }

.tool-wrap{
  display:grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
.tool-card{
  border-radius: var(--radius);
  overflow:hidden;
}
.tool-head{
  padding: 16px;
  background: linear-gradient(135deg, rgba(255,105,180,0.18), rgba(216,191,216,0.35));
  border-bottom: 1px solid var(--border);
}
.tool-body{ padding: 16px; background: var(--surface); }

.actions{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items:center;
}
.btn-danger{
  background: rgba(214,69,69,0.12);
  border-color: rgba(214,69,69,0.25);
}
.btn-danger:hover{ background: rgba(214,69,69,0.18); }

.small{
  font-size: 14px;
  color: var(--muted);
}

/* ============ CTA Banner ============ */
.cta{
  background: linear-gradient(135deg, rgba(255,105,180,0.18), rgba(230,230,250,0.55));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 14px;
}

/* ============ Footer ============ */
footer{
  margin-top: 40px;
  background: #111;
  color: #f0f0f0;
}
footer a{ color: #f0f0f0; }
.footer-top{
  padding: 34px 0;
}
.footer-grid{
  display:grid;
  gap: 18px;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
}
.footer-title{ font-weight: 900; margin-bottom: 10px; }
.footer-links{
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a{
  opacity: .9;
  transition: transform .2s ease, color .2s ease, opacity .2s ease;
}
.footer-links a:hover{
  opacity: 1;
  color: var(--primary-2);
  transform: translateX(3px);
}
.social{
  display:flex;
  gap: 10px;
  margin-top: 12px;
}
.social a{
  width: 38px;
  height: 38px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.15);
  display:flex;
  align-items:center;
  justify-content:center;
  transition: transform .2s ease, background .2s ease;
}
.social a:hover{
  transform: translateY(-2px);
  background: rgba(255,105,180,0.20);
}
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 14px 0;
  text-align:center;
  color: rgba(255,255,255,0.85);
  font-size: 14px;
}

/* ============ Responsive ============ */
@media (max-width: 1023px){
  .hero-grid{ grid-template-columns: 1fr; }
  .tools-grid{ grid-template-columns: repeat(2, 1fr); }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px){
  .nav-links{ display:none; }
  .hamburger{ display:inline-flex; }
  .form-row{ grid-template-columns: 1fr; }
  .tools-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .cta{ flex-direction: column; align-items:flex-start; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior: auto !important; transition: none !important; }
}