@charset "UTF-8";

/* Reset & Base */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    /* Prevent horizontal scroll */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

/* Vertical Writing for Nav */
.writing-vertical-rl {
    writing-mode: vertical-rl;
    text-orientation: upright;
}



/* -------------------------------------------------------------
   Layout Phases (PC Only)
------------------------------------------------------------- */
@media (min-width: 1024px) {

    /* PHASE 1: FV ~ About (Split Layout) */
    .layout-phase-1 {
        display: flex;
        flex-direction: row-reverse;
        /* Swapped Left/Right */
        flex-wrap: wrap;
        width: 100%;
        position: relative;
    }

    /* Left Sticky Area (Now on the Right) */
    .sticky-sidebar {
        width: 35%;
        height: 100vh;
        position: sticky;
        top: 0;
        z-index: 50;
        background-color: #F4F7F9;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem 2rem;
        border-left: 1px solid rgba(0, 0, 0, 0.03);
        /* Changed from right to left */
    }

    /* Right Scroll Area (Now on the Left) */
    .scroll-content-area {
        width: 65%;
        position: relative;
    }

    /* About Broken Grid */
    .about-broken-grid {
        margin-left: -5%;
        /* Pull left visually */
        width: 90%;
        margin-top: 10vh;
    }


    /* PHASE 2: Service ~ Footer (Standard Layout) */
    .layout-phase-2 {
        width: 100%;
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 4rem;
        /* Restore padding */
        position: relative;
        z-index: 20;
        /* Above any fixed bg */
        background-color: #F4F7F9;
    }

    /* Utility to break out of max-width container for full-width background */
    .break-out-full-width {
        margin-left: calc(-50vw + 50%);
        margin-right: calc(-50vw + 50%);
        width: 100vw;
        max-width: 100vw;
        padding-left: 4rem;
        padding-right: 4rem;
    }

    /* Adjust section titles for Phase 2 */
    .layout-phase-2 .section-title-wrapper {
        display: flex;
        justify-content: center;
        margin-bottom: 5rem;
    }
}

/* Asanoha Sidebar Pattern */
.asanoha-sidebar {
    background-color: #F4F7F9 !important;
    position: relative;
    overflow: hidden;
}

.asanoha-sidebar::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;

    /* Subtle visibility */
    opacity: 0.12;

    --bg-base-color: transparent;
    --bg-line-color: #2c3e50;
    --bg-pattern-size: 2.598em 1.5em;
    font-size: 32px;

    background-color: var(--bg-base-color);
    background-image:
        linear-gradient(90deg, var(--bg-line-color) 1.5%, transparent 1.5%, transparent 98.5%, var(--bg-line-color) 98.5%, var(--bg-line-color) 100%),
        repeating-conic-gradient(at 33.33% 2.6%, transparent 0deg 270deg, var(--bg-line-color) 270deg 360deg),
        repeating-conic-gradient(at 33.33% 97.4%, transparent 0deg 180deg, var(--bg-line-color) 180deg 270deg, transparent 270deg 360deg),
        repeating-conic-gradient(at 66.66% 2.6%, var(--bg-line-color) 0deg 90deg, transparent 90deg 360deg),
        repeating-conic-gradient(at 66.66% 97.4%, transparent 0deg 90deg, var(--bg-line-color) 90deg 180deg, transparent 180deg 360deg),
        repeating-conic-gradient(at 15.7% 50%, transparent 0deg 210deg, #F4F7F9 210deg 330deg, transparent 330deg 360deg),
        repeating-conic-gradient(at 19% 50%, transparent 0deg 210deg, var(--bg-line-color) 210deg 330deg, transparent 330deg 360deg),
        repeating-conic-gradient(at 84.3% 50%, transparent 0deg 30deg, #F4F7F9 30deg 150deg, transparent 150deg 360deg),
        repeating-conic-gradient(at 81% 50%, transparent 0deg 30deg, var(--bg-line-color) 30deg 150deg, transparent 150deg 360deg),
        linear-gradient(60deg, transparent 0%, transparent 48.7%, var(--bg-line-color) 48.7%, var(--bg-line-color) 51.3%, transparent 51.3%, transparent 100%),
        linear-gradient(-60deg, transparent 0%, transparent 48.7%, var(--bg-line-color) 48.7%, var(--bg-line-color) 51.3%, transparent 51.3%, transparent 100%),
        linear-gradient(30deg, transparent 0%, transparent 48.5%, var(--bg-line-color) 48.5%, var(--bg-line-color) 51.5%, transparent 51.5%, transparent 100%),
        linear-gradient(-30deg, transparent 0%, transparent 48.5%, var(--bg-line-color) 48.5%, var(--bg-line-color) 51.5%, transparent 51.5%, transparent 100%),
        linear-gradient(0deg, transparent 0%, transparent 47.4%, var(--bg-line-color) 47.4%, var(--bg-line-color) 52.6%, transparent 52.6%, transparent 100%),
        linear-gradient(90deg, transparent 0%, transparent 48.5%, var(--bg-line-color) 48.5%, var(--bg-line-color) 51.5%, transparent 51.5%, transparent 100%);
    background-repeat: repeat;
    background-size: var(--bg-pattern-size);

    /* Fade from top-right to bottom-left */
    -webkit-mask-image: linear-gradient(225deg, black 0%, transparent 75%);
    mask-image: linear-gradient(225deg, black 0%, transparent 75%);
}

.asanoha-sidebar>div,
.asanoha-sidebar>nav {
    position: relative;
    z-index: 10;
}

/* Global resets for specific request */
img {
    border-radius: 0 !important;
    box-shadow: none !important;
}

/* Adjust Section Spacing globally */
section {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

@media (min-width: 768px) {
    section {
        padding-top: 6rem;
        padding-bottom: 6rem;
    }
}



/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 30px, 0);
    }

    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.fade-in-up {
    opacity: 0;
    animation-fill-mode: forwards;
    /* Animation is triggered by JS adding a class or IntersectionObserver, but here I'll use a simple utility class approach coupled with JS observer */
}

.fade-in-valid {
    animation: fadeInUp 1.0s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Ken Burns Effect for FV */
@keyframes kenburns {
    0% {
        transform: scale(1.0);
    }

    100% {
        transform: scale(1.1);
    }
}

.animate-kenburns {
    animation: kenburns 10s ease-out infinite alternate;
}

@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fade-in 2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes scroll-hint {
    0% {
        transform: translateY(-100%);
    }

    50% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(100%);
    }
}

/* Swiper Fade Effect Override */
.swiper-slide {
    transition: opacity 1s ease-in-out;
}

/* Mobile Nav Animation */
#hamburger-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

#hamburger-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Utility Delays */
.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

/* Selection Color */
::selection {
    background: #2C3E50;
    color: #fff;
}

/* FV Height Fix for mobile browsers */
#fv {
    aspect-ratio: 1 / 1;
    height: auto;
    width: 100%;
    padding: 0 !important;
    margin: 0 !important;
}

@media (min-width: 1024px) {
    #fv {
        aspect-ratio: auto;
        height: 100vh;
        height: 100dvh;
    }
}

/* Point Number Diamond Design */
.number-07 {
    position: relative;
    font-family: "Zen Old Mincho", serif;
    font-size: 24px;
    color: #333;
    font-weight: 700;
    line-height: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    text-align: center;
    width: 80px;
    height: 80px;
    background-color: #F4F7F9;
    z-index: 1;
    margin-bottom: 2.5rem;
}

.number-07 span {
    font-size: 10px;
    letter-spacing: 0.2em;
    margin-bottom: 2px;
}

.number-07::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: inline-block;
    transform: rotate(45deg);
    border: solid 1px #4A5D6E;
    z-index: -1;
    background-color: #F4F7F9;
}

/* Simple Number with Slash Design */
.number-01 {
    position: relative;
    font-family: "Zen Old Mincho", serif;
    font-size: 64px;
    color: #333;
    font-weight: 400;
    line-height: 1.5;
    display: block;
    box-sizing: border-box;
    text-align: center;
    width: fit-content;
}

.number-01::after {
    content: '';
    position: absolute;
    bottom: -20px;
    right: -24px;
    width: 40px;
    height: 80px;
    border-left: 1px solid #333;
    transform: rotate(45deg);
    background-color: #F4F7F9;
}

@media (max-width: 1024px) {
    .number-01 {
        font-size: 44px;
    }

    .number-01::after {
        width: 30px;
        height: 60px;
        bottom: -15px;
        right: -18px;
    }
}

/* Recommend Fixed Background */
#recommend {
    clip-path: inset(0);
}

.recommend-fixed-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/menu_recommend_bg.jpg');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: -1;
}

/* About Fixed Background */
#introduction {
    clip-path: inset(0);
}

.about-fixed-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/about_bg.jpg');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: -1;
}

/* Course Fixed Background */
#price {
    clip-path: inset(0);
}

.course-fixed-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/cource_bg01.jpg');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: -1;
}

/* Points Fixed Background */
#points-detail {
    clip-path: inset(0);
}

.points-fixed-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/commitment_bg.png');
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    z-index: -1;
    background-color: #F4F7F9;
}

/* Dynamic Scroll to Top */
#scrollToTop {
    mix-blend-mode: difference;
    background-color: white;
    /* Inverts background */
    color: black;
    /* Inverts relative to button bg */
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.mix-blend-diff {
    mix-blend-mode: difference;
}