@import url('https://fonts.googleapis.com/css2?family=Raleway:wght@400;600;700&family=Roboto:wght@300;400;500&display=swap');

/* Base Reset & Core Styles 북 */
:root {
    --x6p-primary: #9333ea;
    --x6p-secondary: #7e22ce;
    --x6p-accent: #fbbf24;
    --x6p-background: #faf5ff;
    --x6p-text: #581c87;
    --x6p-muted: #d8b4fe;
    --x6p-light-purple: #f3e8ff;
    --x6p-dark-purple: #4a044e;
    --x6p-white: #ffffff;
    --x6p-black: #000000;

    --pg-heading-font: 'Raleway', sans-serif;
    --pg-body-font: 'Roboto', sans-serif;

    --pg-container-width: 1200px;
    --pg-section-padding-desktop: 100px 0;
    --pg-section-padding-mobile: 60px 0;
}

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

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

body {
    font-family: var(--pg-body-font);
    color: var(--x6p-text);
    background-color: var(--x6p-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--x6p-accent);
    color: var(--x6p-dark-purple);
}

/* Typography Scale 북 */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--pg-heading-font);
    color: var(--x6p-secondary);
    line-height: 1.2;
    margin-bottom: 0.8em;
    font-weight: 700;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.05em;
}

h2 {
    font-size: 2.8rem;
    letter-spacing: -0.04em;
}

h3 {
    font-size: 2.2rem;
    letter-spacing: -0.03em;
}

h4 {
    font-size: 1.8rem;
    letter-spacing: -0.02em;
}

h5 {
    font-size: 1.4rem;
}

h6 {
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

p {
    margin-bottom: 1em;
    font-size: 1.1rem;
    color: var(--x6p-text);
}

a {
    color: var(--x6p-primary);
    text-decoration: none;
    transition: color 0.3s ease, border-color 0.3s ease;
}

a:hover {
    color: var(--x6p-secondary);
}

ul {
    list-style: none;
}

/* Utility Classes 북 */
.pg-container {
    max-width: var(--pg-container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.pg-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.pg-flex {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

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

.pg-section-heading {
    text-align: center;
    margin-bottom: 60px;
}

.pg-section-heading h2 {
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.pg-section-heading h2::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -10px;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--x6p-accent);
    border-radius: 2px;
}

.pg-section-heading p {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.2rem;
    color: var(--x6p-muted);
}

/* Buttons 북 */
.pg-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent;
}

.pg-button-primary {
    background-color: var(--x6p-primary);
    color: var(--x6p-white);
    box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

.pg-button-primary:hover {
    background-color: var(--x6p-secondary);
    box-shadow: 0 6px 20px rgba(126, 34, 206, 0.5);
    transform: translateY(-2px);
}

.pg-button-secondary {
    background-color: var(--x6p-accent);
    color: var(--x6p-dark-purple);
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.4);
}

.pg-button-secondary:hover {
    background-color: #fcd34d;
    box-shadow: 0 6px 20px rgba(252, 211, 77, 0.5);
    transform: translateY(-2px);
}

.pg-button-outline {
    background-color: transparent;
    color: var(--x6p-primary);
    border-color: var(--x6p-primary);
}

.pg-button-outline:hover {
    background-color: var(--x6p-primary);
    color: var(--x6p-white);
    box-shadow: 0 4px 15px rgba(147, 51, 234, 0.2);
}

.pg-button i {
    margin-right: 8px;
}

/* Header & Navigation 북 */
.pg-header {
    background-color: var(--x6p-dark-purple);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.pg-logo {
    font-family: var(--pg-heading-font);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--x6p-accent);
    text-decoration: none;
    display: flex;
    align-items: center;
}

.pg-logo img {
    height: 40px;
    margin-right: 10px;
}

.pg-nav-links {
    display: flex;
    gap: 30px;
}

.pg-nav-links a {
    color: var(--x6p-white);
    font-weight: 500;
    font-size: 1.05rem;
    padding: 5px 0;
    position: relative;
}

.pg-nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0%;
    height: 2px;
    background-color: var(--x6p-accent);
    transition: width 0.3s ease;
}

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

.pg-nav-cta {
    margin-left: 20px;
}

.pg-hamburger {
    display: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.pg-hamburger span {
    width: 28px;
    height: 3px;
    background-color: var(--x6p-white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.pg-mobile-menu {
    display: none;
    flex-direction: column;
    background-color: var(--x6p-dark-purple);
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    padding: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.pg-mobile-menu.active {
    display: flex;
}

.pg-mobile-menu a {
    color: var(--x6p-white);
    padding: 12px 15px;
    font-size: 1.1rem;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.pg-mobile-menu a:last-child {
    border-bottom: none;
}

.pg-mobile-menu .pg-button {
    margin-top: 15px;
    width: fit-content;
    align-self: center;
}

/* Hero Section 북 */
.pg-hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    color: var(--x6p-white);
    overflow: hidden;
}

.pg-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(147, 51, 234, 0.7) 0%, rgba(126, 34, 206, 0.85) 100%);
    z-index: 1;
}

.pg-hero-content {
    position: relative;
    z-index: 2;
    text-align: left;
    max-width: 800px;
    padding: 40px 0;
}

.pg-hero-content h1 {
    font-size: 4.5rem;
    color: var(--x6p-white);
    margin-bottom: 25px;
    line-height: 1.1;
}

.pg-hero-content p {
    font-size: 1.5rem;
    margin-bottom: 40px;
    color: var(--x6p-light-purple);
    line-height: 1.4;
}

.pg-hero-buttons .pg-button {
    margin-right: 20px;
}

/* Section Styling 북 */
.pg-section {
    padding: var(--pg-section-padding-desktop);
    position: relative;
    overflow: hidden;
}

.pg-section:nth-of-type(even) {
    background-color: var(--x6p-light-purple);
}

.pg-section-separator {
    width: 100%;
    height: 60px;
    background: linear-gradient(135deg, var(--x6p-light-purple) 0%, var(--x6p-background) 100%);
    transform: skewY(-2deg);
    position: relative;
    z-index: 0;
    margin-top: -60px;
    margin-bottom: -60px;
}

.pg-section-separator-reverse {
    transform: skewY(2deg);
}

/* Card Components 북 */
.pg-card {
    background-color: var(--x6p-white);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.pg-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.pg-card-icon {
    font-size: 3rem;
    color: var(--x6p-primary);
    margin-bottom: 20px;
}

.pg-card-title {
    font-size: 1.6rem;
    margin-bottom: 15px;
    color: var(--x6p-secondary);
}

.pg-card-text {
    font-size: 1rem;
    color: var(--x6p-text);
    flex-grow: 1;
}

.pg-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* Course Card specific styling */
.pg-course-card {
    display: flex;
    flex-direction: column;
    background-color: var(--x6p-white);
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.07);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: left;
}

.pg-course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.12);
}

.pg-course-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.pg-course-card-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.pg-course-card h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--x6p-secondary);
}

.pg-course-card p {
    font-size: 0.95rem;
    color: var(--x6p-text);
    margin-bottom: 15px;
    flex-grow: 1;
}

.pg-course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--x6p-muted);
    margin-bottom: 15px;
}

.pg-course-meta span {
    display: flex;
    align-items: center;
}

.pg-course-meta i {
    margin-right: 5px;
    color: var(--x6p-primary);
}

.pg-course-price {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--x6p-primary);
    margin-bottom: 15px;
}

.pg-course-card .pg-button {
    width: 100%;
    margin-top: auto;
}

/* Testimonial Card */
.pg-testimonial-card {
    background-color: var(--x6p-white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
}

.pg-testimonial-card p {
    font-size: 1.15rem;
    font-style: italic;
    margin-bottom: 25px;
    color: var(--x6p-secondary);
}

.pg-testimonial-card .pg-author-name {
    font-weight: 700;
    color: var(--x6p-primary);
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.pg-testimonial-card .pg-author-title {
    font-size: 0.9rem;
    color: var(--x6p-muted);
}

/* Form Styling 북 */
.pg-form-group {
    margin-bottom: 20px;
    position: relative;
}

.pg-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--x6p-secondary);
    font-size: 0.95rem;
}

.pg-form-group input[type="text"],
.pg-form-group input[type="email"],
.pg-form-group input[type="tel"],
.pg-form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--x6p-muted);
    border-radius: 8px;
    font-family: var(--pg-body-font);
    font-size: 1rem;
    color: var(--x6p-text);
    background-color: var(--x6p-white);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.pg-form-group input:focus,
.pg-form-group textarea:focus {
    outline: none;
    border-color: var(--x6p-primary);
    box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.2);
}

.pg-form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.pg-form-message {
    padding: 15px;
    margin-top: 20px;
    border-radius: 8px;
    font-weight: 500;
    text-align: center;
}

.pg-form-message.success {
    background-color: #d1fae5; /* green-100 */
    color: #065f46; /* green-700 */
    border: 1px solid #34d399; /* green-300 */
}

.pg-form-message.error {
    background-color: #fee2e2; /* red-100 */
    color: #991b1b; /* red-700 */
    border: 1px solid #ef4444; /* red-400 */
}

/* Trust elements */
.pg-trust-item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--x6p-white);
    padding: 15px 25px;
    border-radius: 50px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    font-weight: 500;
    color: var(--x6p-secondary);
    font-size: 1.1rem;
}

.pg-trust-item i {
    color: var(--x6p-accent);
    font-size: 1.5rem;
}

/* Footer 북 */
.pg-footer {
    background-color: var(--x6p-dark-purple);
    color: var(--x6p-light-purple);
    padding: 40px 0;
    text-align: center;
    font-size: 0.95rem;
}

.pg-footer-links {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    gap: 25px;
    flex-wrap: wrap;
}

.pg-footer-links a {
    color: var(--x6p-light-purple);
    position: relative;
}

.pg-footer-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 0%;
    height: 1px;
    background-color: var(--x6p-accent);
    transition: width 0.3s ease;
}

.pg-footer-links a:hover::after {
    width: 100%;
}

.pg-footer p {
    color: var(--x6p-muted);
    margin-bottom: 0;
}

/* Animations 북 */
.pg-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.pg-animate.pg-animated {
    opacity: 1;
    transform: translateY(0);
}

/* FAQ Accordion */
.pg-faq-item {
    background-color: var(--x6p-white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    border: 1px solid var(--x6p-light-purple);
}

.pg-faq-q {
    padding: 20px 25px;
    font-weight: 600;
    color: var(--x6p-secondary);
    font-size: 1.15rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--x6p-background);
    transition: background-color 0.3s ease;
}

.pg-faq-q:hover {
    background-color: var(--x6p-light-purple);
}

.pg-faq-q i {
    transition: transform 0.3s ease;
    font-size: 1.2rem;
    color: var(--x6p-primary);
}

.pg-faq-item.active .pg-faq-q i {
    transform: rotate(180deg);
}

.pg-faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.3s ease-out;
    padding: 0 25px;
}

.pg-faq-item.active .pg-faq-a {
    max-height: 500px; /* Sufficient height for most answers */
    padding: 15px 25px 25px;
}

.pg-faq-a p {
    font-size: 1rem;
    color: var(--x6p-text);
    margin-bottom: 0;
}

/* Process Steps */
.pg-process-step {
    text-align: center;
    position: relative;
}

.pg-process-step i {
    font-size: 3.5rem;
    color: var(--x6p-primary);
    margin-bottom: 20px;
    display: block;
}

.pg-process-step h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.pg-process-step p {
    font-size: 1rem;
}

.pg-process-arrow {
    position: absolute;
    top: 50px;
    right: -25px;
    width: 50px;
    height: 10px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="50" height="10" viewBox="0 0 50 10"><path fill="%23fbbf24" d="M0 0h40L50 5 40 10H0z"/></svg>') no-repeat center center;
    background-size: contain;
    z-index: 1;
}

.pg-process-steps.pg-grid > div:last-child .pg-process-arrow {
    display: none;
}

@media (min-width: 769px) {
    .pg-process-steps.pg-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    .pg-process-step {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

/* Why Choose Us */
.pg-why-choose-us-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.pg-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    text-align: left;
}

.pg-feature-item i {
    font-size: 2.5rem;
    color: var(--x6p-primary);
    flex-shrink: 0;
    margin-top: 5px;
}

.pg-feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.pg-feature-item p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--x6p-text);
}

/* Contact Page */
.pg-contact-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    align-items: flex-start;
}

.pg-contact-info {
    background-color: var(--x6p-white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.pg-contact-info h3 {
    color: var(--x6p-primary);
    margin-bottom: 25px;
    text-align: center;
}

.pg-contact-detail {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    gap: 15px;
}

.pg-contact-detail i {
    font-size: 1.8rem;
    color: var(--x6p-accent);
    flex-shrink: 0;
}

.pg-contact-detail div {
    line-height: 1.4;
}

.pg-contact-detail strong {
    display: block;
    color: var(--x6p-secondary);
    margin-bottom: 3px;
}

.pg-contact-detail span, .pg-contact-detail a {
    color: var(--x6p-text);
    font-size: 1rem;
}

.pg-contact-detail a:hover {
    color: var(--x6p-primary);
}

/* Responsive Design 북 */
@media (max-width: 1024px) {
    .pg-container {
        padding: 0 25px;
    }
    h1 {
        font-size: 3rem;
    }
    h2 {
        font-size: 2.4rem;
    }
    .pg-hero-content p {
        font-size: 1.3rem;
    }
    .pg-nav-links {
        gap: 20px;
    }

    .pg-navbar .pg-button-primary {
        padding: 10px 20px;
        font-size: 1rem;
    }

    .pg-section {
        padding: 80px 0;
    }

    .pg-process-arrow {
        display: none;
    }
}

@media (max-width: 768px) {
    .pg-navbar {
        flex-wrap: wrap;
        justify-content: space-between;
    }
    .pg-nav-links, .pg-nav-cta {
        display: none;
    }
    .pg-hamburger {
        display: flex;
    }
    .pg-hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .pg-hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .pg-hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    .pg-hero {
        min-height: 70vh;
    }
    .pg-hero-content {
        text-align: center;
        max-width: unset;
    }
    .pg-hero-content h1 {
        font-size: 2.5rem;
    }
    .pg-hero-content p {
        font-size: 1.1rem;
    }
    .pg-hero-buttons .pg-button {
        margin-right: 10px;
        margin-bottom: 15px;
    }
    .pg-section {
        padding: var(--pg-section-padding-mobile);
    }
    .pg-section-heading {
        margin-bottom: 40px;
    }
    .pg-section-heading h2 {
        font-size: 2rem;
    }
    .pg-grid {
        grid-template-columns: 1fr;
    }
    .pg-trust-item {
        font-size: 0.95rem;
        padding: 12px 20px;
    }
    .pg-trust-item i {
        font-size: 1.3rem;
    }
    .pg-contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .pg-process-steps.pg-grid {
        grid-template-columns: 1fr;
    }
    .pg-process-step {
        padding-bottom: 30px;
        margin-bottom: 30px;
        border-bottom: 1px dashed var(--x6p-muted);
    }
    .pg-process-step:last-child {
        border-bottom: none;
        margin-bottom: 0;
        padding-bottom: 0;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    .pg-hero-content h1 {
        font-size: 2.2rem;
    }
    .pg-hero-content p {
        font-size: 1rem;
    }
    .pg-hero-buttons {
        flex-direction: column;
    }
    .pg-hero-buttons .pg-button {
        width: 100%;
        margin-right: 0;
    }
    .pg-testimonial-card p {
        font-size: 1rem;
    }
    .pg-footer-links {
        flex-direction: column;
        gap: 15px;
    }
}


/* === Quality polish === */
button, [class*="btn"], [class*="cta"] { transition: all 0.3s ease; cursor: pointer; }
button:hover, [class*="btn"]:hover, [class*="cta"]:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); filter: brightness(1.05); }

@keyframes pgFadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.pg-animate { opacity: 0; }
.pg-animate.pg-visible { animation: pgFadeInUp 0.6s ease forwards; }

img { max-width: 100%; height: auto; display: block; }