/*
Theme Name: Ethereum Coin Theme
Theme URI: https://mulmangcho.com/eth
Author: MulmangCho Team
Author URI: https://mulmangcho.com
Description: 이더리움 코인 전망 전문 테마 - 녹색 계열의 미래지향적 디자인
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ethereum-coin-theme
Tags: cryptocurrency, ethereum, blockchain, responsive, dark-mode
*/

/* ==========================================
 * CSS VARIABLES (녹색 계열 테마)
 * =========================================== */
:root {
  /* 주요 색상 - 녹색 계열 */
  --color-bg-main: #0A1F0F;        /* 메인 배경 (진한 녹색) */
  --color-bg-sub: #1D2E23;         /* 서브 배경 (중간 녹색) */
  --color-accent-green: #00E676;   /* 액센트 그린 (강조, CTA) */
  --color-accent-emerald: #10B981; /* 에메랄드 그린 (보조) */
  --color-accent-blue: #29B6F6;    /* 액센트 블루 (링크, 타이틀) */
  --color-text-primary: #E0E0E0;   /* 본문 텍스트 (밝은 회색) */
  --color-text-secondary: #9E9E9E; /* 서브 텍스트 (중간 회색) */
  --color-text-dark: #0A1F0F;      /* 다크 텍스트 (버튼 내부) */

  /* 이더리움 브랜드 색상 */
  --color-eth-primary: #627EEA;    /* 이더리움 메인 컬러 */
  --color-eth-secondary: #8A92B2;  /* 이더리움 서브 컬러 */

  /* 상태 색상 */
  --color-positive: #00E676;       /* 상승 (+) */
  --color-negative: #FF5252;       /* 하락 (-) */
  --color-warning: #FFA500;        /* 경고 (면책 조항) */

  /* 간격 시스템 */
  --spacing-xs: 0.5rem;   /* 8px */
  --spacing-sm: 1rem;     /* 16px */
  --spacing-md: 1.5rem;   /* 24px */
  --spacing-lg: 2rem;     /* 32px */
  --spacing-xl: 3rem;     /* 48px */
  --spacing-xxl: 4rem;    /* 64px */

  /* 브레이크포인트 */
  --breakpoint-mobile: 576px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--color-bg-main);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ==========================================
 * TYPOGRAPHY
 * =========================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent-green);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-family: 'Orbitron', sans-serif;
  text-transform: uppercase;
  letter-spacing: 2px;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3.5vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* ==========================================
 * LAYOUT UTILITIES
 * =========================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.page-container {
  min-height: 100vh;
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(180deg, var(--color-bg-main) 0%, var(--color-bg-sub) 100%);
}

.page-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ==========================================
 * COMMON PAGE ELEMENTS
 * =========================================== */
.page-header {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
  padding: var(--spacing-xl) 0;
}

.page-title {
  color: var(--color-accent-green);
  text-shadow: 0 0 20px rgba(0, 230, 118, 0.5);
  margin-bottom: var(--spacing-md);
}

.page-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================
 * CARDS
 * =========================================== */
.content-box,
.info-card {
  background: rgba(29, 46, 35, 0.8);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 16px;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.content-box:hover,
.info-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(16, 185, 129, 0.2);
  border-color: var(--color-accent-green);
}

/* ==========================================
 * GRID SYSTEM
 * =========================================== */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

/* ==========================================
 * BUTTONS
 * =========================================== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 50px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-emerald), var(--color-accent-green));
  color: var(--color-text-dark);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0, 230, 118, 0.5);
}

.btn-secondary {
  background: transparent;
  border: 2px solid var(--color-accent-green);
  color: var(--color-accent-green);
}

.btn-secondary:hover {
  background: var(--color-accent-green);
  color: var(--color-text-dark);
}

/* ==========================================
 * DISCLAIMER BOX
 * =========================================== */
.disclaimer-box {
  background: rgba(255, 165, 0, 0.1);
  border: 2px solid var(--color-warning);
  border-radius: 12px;
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.disclaimer-box strong {
  color: var(--color-warning);
  font-size: 1.1rem;
}

.disclaimer-box p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

/* ==========================================
 * ANIMATIONS
 * =========================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 1s ease-out;
}

/* ==========================================
 * RESPONSIVE DESIGN
 * =========================================== */
@media (max-width: 1024px) {
  html {
    font-size: 15px;
  }

  .info-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

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

  .content-box,
  .info-card {
    padding: var(--spacing-md);
  }

  .info-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  html {
    font-size: 13px;
  }

  .container,
  .page-content {
    padding: 0 var(--spacing-sm);
  }
}

/* ==========================================
 * UTILITY CLASSES
 * =========================================== */
.text-center {
  text-align: center;
}

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

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

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

/* Price Change Colors */
.positive {
  color: var(--color-positive);
}

.negative {
  color: var(--color-negative);
}