/*
Theme Name: ThanhWeb Portfolio
Theme URI: https://thanhweb.net
Author: Thanh
Author URI: https://thanhweb.net
Description: Custom portfolio theme cho thanhweb.net — bố cục lấy cảm hứng từ site portfolio khanhlinn.id.vn, hiệu ứng scroll bằng GSAP + ScrollTrigger, không dùng page builder.
Version: 1.0.0
License: Private
Text Domain: thanhweb
*/

/* ==========================================================================
   1. CSS VARIABLES — ThanhWeb brand identity
   ========================================================================== */
:root {
  /* Đen - Vàng Gold */
  --tw-primary: #D4AF37;      /* gold chính */
  --tw-accent: #F4D06F;       /* gold sáng / highlight */
  --tw-gold-deep: #9C7A24;    /* gold trầm, dùng cho shadow/border đậm */
  --tw-bg: #0b0a08;
  --tw-bg-soft: #16130d;
  --tw-glass-bg: rgba(212, 175, 55, 0.05);
  --tw-glass-border: rgba(212, 175, 55, 0.18);
  --tw-text: #f5efe0;
  --tw-text-dim: #b8ad94;
  --tw-radius: 20px;
  --tw-font-display: 'Sora', 'Be Vietnam Pro', sans-serif;
  --tw-font-body: 'Inter', 'Be Vietnam Pro', sans-serif;
  --tw-container: 1180px;
  --tw-gap: clamp(1rem, 3vw, 2.5rem);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--tw-bg);
  color: var(--tw-text);
  font-family: var(--tw-font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.tw-container {
  max-width: var(--tw-container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2rem);
}

.tw-visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* Skip link for accessibility */
.tw-skip-link {
  position: absolute; top: -100px; left: 1rem; z-index: 999;
  background: var(--tw-primary); color: #fff; padding: .75rem 1.25rem;
  border-radius: 8px; transition: top .2s ease;
}
.tw-skip-link:focus { top: 1rem; }

/* Background ambient glow (replaces the reference site's decorative bg images) */
.tw-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 400px at 15% 10%, rgba(212,175,55,.14), transparent 70%),
    radial-gradient(600px 400px at 85% 30%, rgba(244,208,111,.10), transparent 70%);
}

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4 { font-family: var(--tw-font-display); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
.tw-eyebrow {
  display: inline-block; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--tw-accent); font-weight: 600; margin-bottom: .75rem;
}
.tw-gradient-text {
  background: linear-gradient(90deg, var(--tw-primary), var(--tw-accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ==========================================================================
   4. HEADER / NAV
   ========================================================================== */
.tw-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(10,14,26,.7);
  border-bottom: 1px solid var(--tw-glass-border);
}
.tw-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 1rem;
}
.tw-logo { font-family: var(--tw-font-display); font-weight: 700; font-size: 1.2rem; }
.tw-nav__list { display: flex; gap: clamp(1rem, 3vw, 2rem); }
.tw-nav__list a {
  font-size: .95rem; color: var(--tw-text-dim); transition: color .2s ease;
}
.tw-nav__list a:hover, .tw-nav__list a:focus-visible { color: var(--tw-text); }
.tw-nav-toggle { display: none; }

@media (max-width: 780px) {
  .tw-nav { position: fixed; inset: 0 0 0 30%; top: 64px; background: var(--tw-bg-soft);
    transform: translateX(100%); transition: transform .3s ease; padding: 2rem; z-index: 90; }
  .tw-nav.is-open { transform: translateX(0); }
  .tw-nav__list { flex-direction: column; gap: 1.25rem; }
  .tw-nav-toggle { display: block; font-size: 1.5rem; z-index: 95; }
}

/* ==========================================================================
   5. GLASS CARD (shared component)
   ========================================================================== */
.tw-card {
  background: var(--tw-glass-bg);
  border: 1px solid var(--tw-glass-border);
  border-radius: var(--tw-radius);
  backdrop-filter: blur(10px);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}

/* ==========================================================================
   6. HERO
   ========================================================================== */
.tw-hero {
  min-height: 92vh; display: flex; align-items: center;
  padding-block: clamp(3rem, 8vw, 6rem);
}
.tw-hero__grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: var(--tw-gap); align-items: center;
}
@media (max-width: 860px) { .tw-hero__grid { grid-template-columns: 1fr; text-align: center; } }

.tw-hero__quote {
  margin-top: 1.5rem; font-style: italic; color: var(--tw-text-dim);
  border-left: 2px solid var(--tw-accent); padding-left: 1rem;
}
@media (max-width: 860px) { .tw-hero__quote { border-left: none; border-top: 2px solid var(--tw-accent); padding-left: 0; padding-top: 1rem; } }

.tw-hero__desc { margin-top: 1.25rem; color: var(--tw-text-dim); max-width: 46ch; }
@media (max-width: 860px) { .tw-hero__desc { margin-inline: auto; } }

.tw-hero__cta { display: flex; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }
@media (max-width: 860px) { .tw-hero__cta { justify-content: center; } }

.tw-btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 1.6rem; border-radius: 999px; font-weight: 600; font-size: .95rem;
  transition: transform .25s ease, box-shadow .25s ease;
}
.tw-btn--primary {
  background: linear-gradient(90deg, var(--tw-primary), var(--tw-accent)); color: #1a1408;
  box-shadow: 0 8px 24px -8px rgba(212,175,55,.55);
  position: relative; overflow: hidden;
}
.tw-btn--ghost { border: 1px solid var(--tw-glass-border); color: var(--tw-text); }

/* Hover: lift + glow, and a subtle sheen sweep across primary buttons */
.tw-btn { transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease; }
.tw-btn:hover, .tw-btn:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -8px rgba(212,175,55,.7);
}
.tw-btn--ghost:hover, .tw-btn--ghost:focus-visible { border-color: var(--tw-primary); color: var(--tw-primary); }

.tw-btn--primary::before {
  content: ""; position: absolute; top: 0; left: -60%; width: 40%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,.45), transparent);
  transform: skewX(-20deg);
  transition: left .6s ease;
}
.tw-btn--primary:hover::before { left: 130%; }

.tw-hero__social { display: flex; gap: 1rem; margin-top: 2rem; }
@media (max-width: 860px) { .tw-hero__social { justify-content: center; } }
.tw-hero__social a {
  width: 42px; height: 42px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid var(--tw-glass-border); transition: border-color .2s ease, transform .2s ease;
}
.tw-hero__social a:hover { border-color: var(--tw-accent); transform: translateY(-3px); }

.tw-hero__portrait { position: relative; }
.tw-hero__portrait img {
  border-radius: var(--tw-radius); border: 1px solid var(--tw-glass-border);
}
.tw-hero__portrait::after {
  content: ""; position: absolute; inset: -12px; z-index: -1; border-radius: calc(var(--tw-radius) + 12px);
  background: linear-gradient(135deg, rgba(212,175,55,.25), rgba(244,208,111,.1));
  filter: blur(20px);
}

/* ==========================================================================
   7. SECTION SCAFFOLDING
   ========================================================================== */
.tw-section { padding-block: clamp(3.5rem, 8vw, 6rem); }
.tw-section__head { text-align: center; max-width: 640px; margin: 0 auto clamp(2rem, 5vw, 3.5rem); }
.tw-section__head p { color: var(--tw-text-dim); margin-top: .75rem; }

/* ==========================================================================
   8. INTRO / JOURNEY CARDS ("Giới thiệu" — Hành trình / Tâm thế / Kết nối / Ước mơ)
   ========================================================================== */
.tw-journey {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--tw-gap);
}
@media (max-width: 980px) { .tw-journey { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .tw-journey { grid-template-columns: 1fr; } }
.tw-journey__item { transition: transform .3s ease, border-color .3s ease; }
.tw-journey__item:hover { transform: translateY(-6px); border-color: var(--tw-accent); }

/* ==========================================================================
   9. SERVICES / SKILLS ("Kỹ Năng" → dịch vụ ThanhWeb)
   ========================================================================== */
.tw-services { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--tw-gap); }
@media (max-width: 860px) { .tw-services { grid-template-columns: 1fr; } }
.tw-services__icon {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--tw-primary), var(--tw-accent)); margin-bottom: 1rem; font-size: 1.4rem;
}

/* ==========================================================================
   10. ACHIEVEMENTS / PROJECTS ("Thành tích", "Dự Án")
   ========================================================================== */
.tw-grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--tw-gap); }
.tw-project-card__thumb {
  aspect-ratio: 16/10; border-radius: calc(var(--tw-radius) - 6px); overflow: hidden; margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--tw-bg-soft), rgba(212,175,55,.15));
  display: grid; place-items: center; color: var(--tw-text-dim); font-size: .85rem;
}

/* ==========================================================================
   11. CONTACT
   ========================================================================== */
.tw-contact { display: grid; grid-template-columns: 1fr 1fr; gap: var(--tw-gap); align-items: start; }
@media (max-width: 860px) { .tw-contact { grid-template-columns: 1fr; } }
.tw-form { display: grid; gap: 1rem; }
.tw-form input, .tw-form textarea {
  width: 100%; background: rgba(255,255,255,.03); border: 1px solid var(--tw-glass-border);
  border-radius: 12px; padding: .85rem 1rem; color: var(--tw-text); font-family: inherit; font-size: .95rem;
}
.tw-form input:focus, .tw-form textarea:focus { outline: 2px solid var(--tw-accent); outline-offset: 2px; }
.tw-form label { font-size: .85rem; color: var(--tw-text-dim); margin-bottom: .35rem; display: block; }

.tw-form-notice {
  padding: .85rem 1.1rem; border-radius: 12px; margin-bottom: 1.25rem; font-size: .9rem;
}
.tw-form-notice--success {
  background: rgba(212,175,55,.12); border: 1px solid var(--tw-primary); color: var(--tw-accent);
}
.tw-form-notice--error {
  background: rgba(220,60,60,.1); border: 1px solid #dc5c5c; color: #f0a4a4;
}

/* ==========================================================================
   12. FOOTER
   ========================================================================== */
.tw-footer {
  border-top: 1px solid var(--tw-glass-border); padding-block: 2.5rem;
  text-align: center; color: var(--tw-text-dim); font-size: .9rem;
}

/* ==========================================================================
   13. HOVER & MICRO-INTERACTIONS
   ========================================================================== */

/* Cards: lift, gold border glow, slight tilt handled via JS (data-tilt) */
.tw-card {
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
  will-change: transform;
}
.tw-card:hover, .tw-card:focus-within {
  border-color: var(--tw-primary);
  box-shadow: 0 16px 40px -16px rgba(212,175,55,.35);
}

/* Services icon: rotate + brighten on hover */
.tw-services__icon { transition: transform .4s ease, box-shadow .4s ease; }
.tw-card:hover .tw-services__icon {
  transform: rotate(-8deg) scale(1.08);
  box-shadow: 0 8px 18px -6px rgba(212,175,55,.6);
}

/* Project thumbnails: image zoom on hover */
.tw-project-card__thumb { overflow: hidden; position: relative; }
.tw-project-card__thumb img {
  transition: transform .6s ease;
}
.tw-card:hover .tw-project-card__thumb img { transform: scale(1.08); }

/* Nav links: animated gold underline */
.tw-nav__list a { position: relative; padding-bottom: 2px; }
.tw-nav__list a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--tw-primary), var(--tw-accent));
  transition: width .3s ease;
}
.tw-nav__list a:hover::after,
.tw-nav__list a:focus-visible::after,
.tw-nav__list .current-menu-item > a::after { width: 100%; }

/* Logo: subtle gold glow pulse on hover */
.tw-logo { transition: text-shadow .3s ease, color .3s ease; }
.tw-logo:hover { color: var(--tw-primary); text-shadow: 0 0 18px rgba(212,175,55,.5); }

/* Social icons: fill gold + rotate on hover */
.tw-hero__social a { transition: border-color .3s ease, transform .3s ease, background .3s ease; }
.tw-hero__social a:hover {
  border-color: var(--tw-primary);
  background: rgba(212,175,55,.12);
  transform: translateY(-4px) rotate(-6deg);
}

/* Achievement / journey cards: icon or eyebrow shimmer */
.tw-journey__item, .tw-grid-cards .tw-card {
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}

/* Section eyebrow underline reveal */
.tw-eyebrow { position: relative; }

/* Form fields: gold focus glow */
.tw-form input, .tw-form textarea { transition: border-color .25s ease, box-shadow .25s ease; }
.tw-form input:focus, .tw-form textarea:focus {
  border-color: var(--tw-primary);
  box-shadow: 0 0 0 3px rgba(212,175,55,.18);
  outline: none;
}

/* Magnetic buttons + tilt cards are enhanced further via JS (see main.js).
   Class hooks below are toggled/measured by JS, CSS just defines the transition. */
[data-tilt] { transition: transform .15s ease-out; transform-style: preserve-3d; }
[data-magnetic] { transition: transform .25s cubic-bezier(.2,.8,.2,1); }

/* ==========================================================================
   14. BLOG / POST CONTENT TYPOGRAPHY
   ========================================================================== */
.tw-post-content h2, .tw-post-content h3, .tw-post-content h4 { color: var(--tw-text); margin: 2rem 0 1rem; }
.tw-post-content p { margin-bottom: 1.25rem; }
.tw-post-content a { color: var(--tw-primary); text-decoration: underline; text-underline-offset: 3px; }
.tw-post-content a:hover { color: var(--tw-accent); }
.tw-post-content img { border-radius: 12px; margin: 1.5rem 0; }
.tw-post-content ul, .tw-post-content ol { margin: 0 0 1.25rem 1.25rem; }
.tw-post-content blockquote {
  border-left: 3px solid var(--tw-primary); padding-left: 1rem; margin: 1.5rem 0;
  color: var(--tw-text-dim); font-style: italic;
}
.tw-post-content code {
  background: var(--tw-bg-soft); padding: .15rem .4rem; border-radius: 6px; font-size: .9em;
}

.tw-pagination .page-numbers {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 40px; margin: 0 .25rem; border-radius: 10px;
  border: 1px solid var(--tw-glass-border); color: var(--tw-text-dim);
  transition: border-color .2s ease, color .2s ease;
}
.tw-pagination .page-numbers.current { border-color: var(--tw-primary); color: var(--tw-primary); }
.tw-pagination .page-numbers:hover { border-color: var(--tw-primary); color: var(--tw-text); }

/* ==========================================================================
   15. GSAP ANIMATION HOOKS — initial state before JS runs (progressive enhancement)
   ========================================================================== */
.tw-reveal { opacity: 1; }
.js-ready .tw-reveal { opacity: 0; transform: translateY(28px); }

/* Reduced motion respect */
@media (prefers-reduced-motion: reduce) {
  .js-ready .tw-reveal { opacity: 1 !important; transform: none !important; }
}