/*
Theme Name: Donlinee
Theme URI: https://webdot.co.kr
Author: webdot
Author URI: https://webdot.co.kr
Description: A minimal blank WordPress theme by webdot
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: donlinee
Tags: blank, minimal, custom
*/

/* Pretendard Font - CDN (가장 안정적인 방법) */
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

/* CSS Variables */
:root {
    --color-primary: #DC2626;
    --color-primary-dark: #B91C1C;
    --color-primary-light: #EF4444;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, "Helvetica Neue", "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
    font-size: 16px;
    color: #0F172A;
    padding-top: 50px; /* header 높이만큼 여백 추가 */
}

section {
    padding: 0 16px;
}

/* 모바일에서는 더 작은 여백 */
@media (max-width: 768px) {
    body {
        margin-top: 60px;
    }
}

/* Header 스타일 */
#header {
    height: 80px; /* 헤더 높이 고정 */
    background-color: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    top: 0;
    left: 0;
    right: 0;
}

#header a {
    color: #000000;
    text-decoration: none;
}

#header nav a:hover {
    color: #4B5563;
}

main section {
    max-width: 880px;
    margin: 0 auto;
}
main section.full {
    max-width: 100%;
}
main section.full > div {
    width: 100%;
    max-width: 880px;
    margin: 0 auto;
}

main img {
    border: 1px solid #eee;
    width: 100%;
}

@media (max-width: 768px) {
    #header {
        height: 60px;
    }
    body {
        padding-top: 60px;
    }
}
.button {
    background: var(--color-primary);
    border-radius: 4px;
    color: #fff;
    font-weight: 600;
    margin: 0 auto;
    padding: 4px 20px;
}

.h1 {
    font-size: 54px;
    font-style: normal;
    font-weight: 700;
    line-height: 150%; /* 81px */
    letter-spacing: -1.35px;
}
.h2 {
    font-size: 26px;
    font-style: normal;
    font-weight: 700;
    line-height: 150%; /* 39px */
    letter-spacing: -0.78px;
}
.subTitle {
    text-align: center;
    font-size: 26px;
    font-style: normal;
    font-weight: 700;
    line-height: 150%; /* 39px */
    letter-spacing: -0.78px;
    padding: 16px 0;
    border-top: 1px solid;
    border-bottom: 1px solid;
    border-color: #000;
}
.full .subTitle {
    border-color: #fff;
}
.h3 {
    font-size: 20px;
    font-style: normal;
    font-weight: 600;
    line-height: 150%; /* 30px */
    letter-spacing: -0.4px;
}
.point {
    font-size: 20px;
    font-style: normal;
    font-weight: 600;
    line-height: 150%; /* 30px */
    letter-spacing: -0.4px;
    border-left: 3px solid var(--color-primary);
    padding-left: 12px;
}

.p {
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 200%; /* 36px */
    letter-spacing: -0.18px;
}

p {
    font-size: 18px;
    font-style: normal;
    font-weight: 400;
    line-height: 200%; /* 36px */
    letter-spacing: -0.18px;
}
.full p {
    opacity: 0.9;
}
/* YouTube Video Grid */
.youtube-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px 30px;
    margin-top: 40px;
}

@media (max-width: 768px) {
    .h1 {
        font-size: 30px;
    }
    .h2 {
        font-size: 22px;
    }
    .h3 {
        font-size: 17px;
    }
    .subTitle {
        font-size: 22px;
        letter-spacing: -0.58px;
        padding: 12px 0;
    }
    p ,.p {
        font-size: 17px;
    }


    .youtube-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.youtube-item {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.youtube-embed {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 비율 */
    height: 0;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.youtube-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Testimonial Swiper Styles */
.testimonial-swiper {
    width: 100%;
    overflow: hidden;
    margin: 20px 0;
}

.testimonial-swiper .swiper-slide {
    width: auto !important;
    height: auto;
}

.testimonial-swiper .swiper-slide img {
    width: 300px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

@media (max-width: 768px) {
    .testimonial-swiper .swiper-slide img {
        width: 250px;
    }
}

/* Gmarket Sans Font for Hero Title */
.hero-title {
    font-family: 'GmarketSans', 'Pretendard Variable', Pretendard, sans-serif;
}

/* Chapter Accordion Styles */
.chapter-item {
    background-color: #ffffff;
    transition: all 0.3s ease;
}

.chapter-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chapter-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    display: none;
}

.chapter-content.show {
    max-height: none;
    transition: max-height 0.5s ease-in;
}

.chapter-arrow {
    transition: transform 0.3s ease;
}

.chapter-arrow.rotate {
    transform: rotate(180deg);
}

/* Lesson item styles */
.lesson-item {
    transition: background-color 0.2s ease;
}

.lesson-item:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

/* Video Container responsive styles */
.video-container {
    background-color: #000;
    border-radius: 8px;
    overflow: hidden;
    min-height: 250px;
}

@media (max-width: 768px) {
    .video-container {
        height: 250px !important;
        max-height: 40vh !important;
    }
}

/* Lesson button hover effects */
.preview-accordion-item button:focus {
    outline: none;
    box-shadow: inset 0 0 0 2px rgba(220, 38, 38, 0.2);
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .preview-accordion-item button {
        padding: 12px 16px;
    }

    .preview-accordion-item button span {
        font-size: 15px;
    }

    .preview-accordion-item button .text-sm {
        font-size: 13px;
    }
}