/* ===== FONTS (must be first per CSS spec) ===== */
@import url('../assets/css/fonts.css');

/**
 * Hyungjae Youh Portfolio - Common Styles
 * Design: Dark & Minimal (Gusto Template Inspired)
 * Created: 2026-04-16
 */

/* ===== CSS VARIABLES ===== */
:root {
  /* Color System */
  --bg-primary: #0d0d0d;
  --bg-secondary: #1a1a1a;
  --bg-overlay: rgba(0, 0, 0, 0.6);
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --accent-gold: #c9a96e;
  --border-color: rgba(255, 255, 255, 0.1);
  --border-light: rgba(255, 255, 255, 0.15);
  --border-lighter: rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-serif: 'Poppins', 'SUITE', sans-serif;
  --font-sans: 'Poppins', 'SUITE', sans-serif;

  /* Sizes */
  --header-height: 40px;
  --container-max: 1440px;
  --radius-sm: 8px;
  --radius-md: 15px;
  --radius-lg: 15px;
  --radius-xl: 999px;
  --panel-width: min(500px, 40vw);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ===== RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: #0d0d0d;
}

body {
  font-family: var(--font-sans);
  background-color: #0d0d0d;
  color: var(--text-primary);
  line-height: 1.6;
  overflow: hidden;
  height: 100vh;
  padding: 5px;
  box-sizing: border-box;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 64px;
  font-style: italic;
}

h2 {
  font-size: 48px;
  font-style: italic;
}

h3 {
  font-size: 36px;
}

h4 {
  font-size: 28px;
}

h5 {
  font-size: 20px;
}

h6 {
  font-size: 16px;
}

p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-gold);
}

/* ===== HEADER ===== */
header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0;
  background: transparent;
  z-index: 1000;
  pointer-events: none;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
}

/* ===== HEADER BACKGROUND LAYER ===== */
.header-background-layer {
  display: none;
}


.logo {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  align-items: center;
  height: var(--header-height);
  padding: 0 clamp(12px, 1.5vw, 20px);
  background: #0d0d0d;
  border-radius: 15px 0 15px 0;
  transition: opacity var(--transition-fast);
  pointer-events: all;
  cursor: pointer;
  z-index: 1001;
}

.logo-img {
  height: 22px;
  width: auto;
  object-fit: contain;
}

.logo:hover {
  opacity: 0.8;
}

nav.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2.5vw, 36px);
  height: 100%;
  width: var(--panel-width);
  padding: 0;
  background: #0d0d0d;
  border-radius: 0 0 0 0;
  pointer-events: all;
}

nav.desktop-nav a {
  font-size: 14px;
  font-weight: 400;
  position: relative;
  white-space: nowrap;
}

nav.desktop-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gold);
  transition: width var(--transition-fast);
}

nav.desktop-nav a:hover::after {
  width: 100%;
}

nav.desktop-nav a.active {
  color: var(--accent-gold);
}

.admin-nav-link {
  display: flex;
  align-items: center;
  color: rgba(255,255,255,0.4) !important;
  padding: 4px;
}
.admin-nav-link:hover { color: var(--accent-gold) !important; }
.admin-nav-link::after { display: none !important; }

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
  display: block;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(10px, 10px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation */
nav.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  flex-direction: column;
  padding: var(--spacing-2xl);
  gap: var(--spacing-xl);
  z-index: 999;
  animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

nav.mobile-nav.active {
  display: flex;
}

nav.mobile-nav a {
  font-size: 20px;
  font-weight: 500;
}

/* ===== MESSAGE BOX ===== */
.message-box {
  position: fixed;
  bottom: 40px;
  left: 40px;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg) var(--spacing-xl);
  max-width: 420px;
  z-index: 100;
}

.message-box-text {
  font-size: 20px;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  text-align: center;
  font-family: 'Poppins', 'SUITE', sans-serif;
}

.message-box-sub {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255,255,255,0.65);
  margin-top: 6px;
  text-align: center;
  font-family: 'SUITE', 'Poppins', sans-serif;
}

.message-box-rating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--text-secondary);
}

.stars {
  color: var(--accent-gold);
  font-size: 16px;
}

/* ===== ROUND CARD ===== */
.round-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-secondary);
  border: 1px solid var(--border-lighter);
  transition: all var(--transition-smooth);
  cursor: pointer;
}

.round-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.round-card-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  display: block;
}

.round-card-content {
  padding: var(--spacing-lg);
}

.round-card-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.round-card-meta {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ===== IMAGE TAG ===== */
.image-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  border-radius: var(--radius-xl);
  padding: 6px 14px;
  font-size: 13px;
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  z-index: 10;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  text-decoration: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent-gold);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: #d9b378;
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ===== CONTAINERS & LAYOUTS ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-2xl);
}

.grid {
  display: grid;
  gap: var(--spacing-2xl);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}

/* ===== SPACING UTILITIES ===== */
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }
.mt-3xl { margin-top: var(--spacing-3xl); }

.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }
.mb-3xl { margin-bottom: var(--spacing-3xl); }

.pt-3xl { padding-top: var(--spacing-3xl); }
.pb-3xl { padding-bottom: var(--spacing-3xl); }
.py-3xl { padding: var(--spacing-3xl) 0; }

/* ===== APP CONTAINER ===== */
#app {
  position: fixed;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-radius: 15px 15px 0 0;
  overflow: hidden;
}

/* ===== PAGE WRAPPER ===== */
.page-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow: hidden;
}

.page-content {
  height: 100%;
  overflow: hidden;
}

/* ===== SECTIONS ===== */
section {
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title h2 {
  margin-bottom: var(--spacing-md);
}

/* ===== MODAL/POPUP ===== */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: fadeInScale 0.3s ease forwards;
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal-close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--accent-gold);
}

/* ===== FOOTER (REMOVED) ===== */
footer {
  display: none;
  border-bottom-left-radius: 15px;
  border-bottom-right-radius: 15px;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Tablet (max 1023px) */
@media (max-width: 1023px) {
  :root {
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
  }

  h1 {
    font-size: 48px;
  }

  h2 {
    font-size: 36px;
  }

  h3 {
    font-size: 28px;
  }

  .logo {
    font-size: 24px;
  }

  nav.desktop-nav {
    gap: var(--spacing-xl);
  }

  nav.desktop-nav a {
    font-size: 14px;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }

  .message-box {
    max-width: 380px;
    padding: var(--spacing-md) var(--spacing-lg);
    bottom: 30px;
    left: 30px;
  }

  .message-box-text {
    font-size: 18px;
  }
}

/* Nav → Hamburger switch (before text overflow) */
@media (max-width: 900px) {
  nav.desktop-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}

/* Mobile (max 767px) */
@media (max-width: 767px) {
  :root {
    --header-height: 64px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  h3 {
    font-size: 24px;
  }

  h4 {
    font-size: 20px;
  }

  p {
    font-size: 14px;
  }

  header {
    padding-right: var(--spacing-md);
  }

  .logo {
    font-size: 22px;
  }

  nav.mobile-nav {
    padding: var(--spacing-xl);
  }

  nav.mobile-nav a {
    font-size: 18px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .message-box {
    bottom: 20px;
    left: 16px;
    max-width: calc(100% - 32px);
    padding: var(--spacing-md);
  }

  .message-box-text {
    font-size: 16px;
  }

  .container {
    padding: 0 var(--spacing-lg);
  }

  .btn {
    width: 100%;
  }

  .modal-content {
    width: 90%;
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-smooth);
}

.slide-up {
  animation: slideUp var(--transition-smooth);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-secondary);
  border-radius: 10px;
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ===== UTILITIES ===== */
.hidden {
  display: none !important;
}

.visible {
  display: block !important;
}

.text-center {
  text-align: center;
}

.text-gold {
  color: var(--accent-gold);
}

.text-secondary {
  color: var(--text-secondary);
}

.opacity-70 {
  opacity: 0.7;
}

.opacity-50 {
  opacity: 0.5;
}

.overflow-hidden {
  overflow: hidden;
}

.pointer-events-none {
  pointer-events: none;
}

.cursor-pointer {
  cursor: pointer;
}