/*
Theme Name: Billy Ssam - The Planner's Archive
Theme URI: https://k6.co.kr/
Author: Billy Ssam
Author URI: https://k6.co.kr/
Description: 스레드 알려주는 남자 '빌리쌤' - 대기업(GS,한화)출신 기획자이자 브런치 에세이스트를 위한 모던&미니멀 퍼스널 브랜딩 테마
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: billyssam
Tags: personal-brand, modern, minimal, responsive, mobile-first
*/

/* =========================================
   전역 변수 및 리셋
========================================= */
:root {
    /* 컬러 팔레트 */
    --color-primary: #223354;        /* Deep Navy - 신뢰, 전문성 */
    --color-accent: #F6C259;          /* Gold - 프리미엄, 고급스러움 */
    --color-white: #FFFFFF;
    --color-light-gray: #F7F7FA;
    --color-text: #232323;            /* 텍스트 다크 그레이 */
    --color-text-light: #666666;

    /* 타이포그래피 */
    --font-primary: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Noto Serif KR', Georgia, serif;

    /* 간격 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* 반응형 브레이크포인트 */
    --mobile: 480px;
    --tablet: 768px;
    --desktop: 1024px;
    --wide: 1440px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =========================================
   타이포그래피
========================================= */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-family: var(--font-serif);
}

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

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

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

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

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

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

.container-wide {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* =========================================
   버튼
========================================= */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: #1a2640;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 51, 84, 0.3);
}

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

.btn-accent:hover {
    background-color: #e5b045;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(246, 194, 89, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* =========================================
   헤더
========================================= */
.site-header {
    background-color: var(--color-white);
    border-bottom: 1px solid #e5e5e5;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.site-header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-bottom-color: transparent;
}

.header-container {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 2rem;
    padding: 0.75rem var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.site-branding {
    display: flex;
    align-items: center;
}

.site-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.02em;
    transition: all 0.3s ease;
}

.site-logo .logo-image {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-accent);
    box-shadow: 0 2px 8px rgba(246, 194, 89, 0.3);
    transition: all 0.3s ease;
}

.site-logo .logo-icon {
    font-size: 1.5rem;
}

.site-logo:hover {
    color: var(--color-accent);
    transform: translateY(-1px);
}

.site-logo:hover .logo-image {
    border-color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(34, 51, 84, 0.3);
    transform: scale(1.05);
}

/* =========================================
   네비게이션
========================================= */
.main-navigation {
    justify-self: center;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.main-navigation li {
    margin: 0;
}

.main-navigation a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text);
    padding: 0.625rem 1.25rem;
    position: relative;
    display: block;
    border-radius: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-navigation a:hover {
    background-color: rgba(246, 194, 89, 0.1);
    color: var(--color-primary);
}

.main-navigation a.current-menu-item,
.main-navigation a.current_page_item {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.main-navigation a.current-menu-item:hover,
.main-navigation a.current_page_item:hover {
    background-color: #1a2640;
}

/* 사용자 메뉴 스타일 개선 */
.user-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    justify-self: end;
}

.user-menu a {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.user-menu .login-link {
    color: var(--color-text);
}

.user-menu .login-link:hover {
    background-color: var(--color-light-gray);
    color: var(--color-primary);
}

.user-menu .register-link {
    background: linear-gradient(135deg, var(--color-accent) 0%, #e5b045 100%);
    color: var(--color-primary);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(246, 194, 89, 0.25);
}

.user-menu .register-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(246, 194, 89, 0.35);
}

.user-menu .user-link {
    color: var(--color-text);
}

.user-menu .user-link:hover {
    background-color: var(--color-light-gray);
}

.user-menu .logout-link {
    color: var(--color-text-light);
    font-size: 0.85rem;
}

.user-menu .logout-link:hover {
    color: #e74c3c;
}

/* =========================================
   푸터
========================================= */
.site-footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section h3,
.footer-widget-area h3 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.footer-section p,
.footer-section a,
.footer-widget-area p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-section a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    text-align: center;
    font-size: 0.9rem;
}

.footer-bottom .copyright {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.footer-bottom .tagline {
    color: var(--color-accent);
    font-weight: 600;
    font-size: 1rem;
}

/* =========================================
   반응형 디자인
========================================= */
@media (min-width: 769px) {
    .menu-toggle {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .header-container {
        grid-template-columns: 1fr auto;
        gap: 1rem;
        padding: 1rem var(--spacing-md);
    }

    .site-branding {
        grid-column: 1;
    }

    .menu-toggle {
        grid-column: 2;
        grid-row: 1;
        display: flex !important;
    }

    .main-navigation {
        grid-column: 1 / -1;
        justify-self: stretch;
        display: none;
    }

    .main-navigation.toggled {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        gap: 0.5rem;
        padding: 1rem 0;
    }

    .main-navigation a {
        padding: 0.75rem 1rem;
        text-align: left;
    }

    .user-menu {
        grid-column: 1 / -1;
        justify-content: center;
        padding: 1rem 0;
        border-top: 1px solid var(--color-light-gray);
    }

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

/* =========================================
   유틸리티 클래스
========================================= */
.text-center {
    text-align: center;
}

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

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

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

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

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}