/* header layout */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 2000;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    width: 100%;
    min-height: 80px;
    padding: 0 5%;
}

.site-header-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 21px;
}

.site-header-menu-bar {
    position: relative;
    transform-origin: 1px;
    width: 30px;
    height: 3px;
}

.site-header-logo {
    text-decoration: none;
    display: block;
}

.site-header-img {
    display: block;
    width: auto;
    height: clamp(15px, 8vw, 45px);
}

.site-header-buttons {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: clamp(10px, 1.5vw, 25px);
}

.back-index-button {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* --- Global Section Snap Point & Full Screen Behavior --- */
.full-screen {
    display: flex;
    flex-direction: column;
    justify-content: center;
    scroll-snap-align: start;
    scroll-snap-stop: always;
    width: 100%;
    min-height: 100vh;
}

/* --- Shared Container Width --- */
.hero-container,
.intro-container,
.signature-method-container,
.learning-packs-container,
.about-container,
.subscribe-container,
.contacts-container,
.free-subscribe-container {
    width: min(90%, 1440px);
    margin-right: auto;
    margin-left: auto;
}

/* --- Section Padding Reset --- */
.hero-section,
.intro-section,
.signature-method-section,
.learning-packs-section,
.about-section,
.subscribe-section,
.contacts-section,
.free-subscribe-section {
    padding-right: 0;
    padding-left: 0;
}

.section-title {
    margin-top: 3.5rem;
    margin-bottom: 3.5rem;
}

/* --- Hero Layout --- */
.hero-section {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: clamp(1.5rem, 2vw + 2vh, 4.5rem);
    text-align: left;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(8px, 2vw, 20px);
    margin-top: 1rem;
}

/* --- Intro Section Layout --- */
.intro-section {
    align-items: center;
}

.intro-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: clamp(40px, 5vw, 100px);
}

.intro-collage-img {
    display: block;
    width: 80%;
    height: auto;
    background: transparent;
}

.intro-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0;
}

.intro-lead {
    margin-bottom: 1.5rem;
}

.intro-title {
    margin-bottom: 1.5rem;
}

.intro-note {
    margin-bottom: 4rem;
}

/* --- Signature Method Section Layout --- */
.signature-method-section {
    align-items: center;
}

.signature-method-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
}

.signature-method-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    width: 100%;
    margin-bottom: 80px;
}

.signature-method-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.signature-method-intro-title {
    margin-bottom: 1.5rem;
}

.signature-method-buttons {
    margin-bottom: 60px;
}

.skill-levels {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    margin: 40px 0;
}

.skill-levels-title {
    margin-bottom: 1.5rem;
}

.skill-level-row {
    display: grid;
    grid-template-columns:
        clamp(320px, 30vw, 380px)
        clamp(130px, 15vw, 160px)
        minmax(500px, 1fr);
    align-items: center;
    gap: clamp(10px, 3vw, 20px);
    padding: 30px;
}

.skill-level-id {
    display: grid;
    grid-template-columns: 80px 250px;
    align-items: center;
    gap: 0;
}

.skill-level-id-texts {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.skill-level-icon {
    justify-self: center;
    width: 80px;
    height: auto;
}

.skill-levels-note {
    margin-bottom: 40px;
}

/* --- Learning Packs Section Layout --- */
.learning-packs-section {
    align-items: center;
}

.learning-packs-container {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    align-items: center;
    gap: clamp(40px, 5vw, 100px);
    margin-bottom: 60px;
}

.learning-packs-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: left;
}

.learning-packs-product-img {
    width: 100%;
    height: auto;
}

.learning-packs-lead {
    margin-bottom: 1.5rem;
}

.learning-packs-body {
    margin-bottom: 2rem;
}

.learning-packs-icons {
    margin-bottom: 2.5rem;
}

.learning-packs-buttons {
    margin-top: 1rem;
}

/* --- About Section Layout --- */
.about-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 60px;
}

.about-intro {
    display: grid;
    grid-template-columns: 350px 1fr;
    align-items: start;
    gap: 50px;
    width: 100%;
}

.about-profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    margin: 0;
}

.about-founder-name {
    margin: 0;
}

.about-text-paragraph {
    margin-bottom: 1.5rem;
}

.about-commitment {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    width: 100%;
    padding: 50px;
    margin-bottom: 60px;
}

.about-commitment-grid {
    display: grid;
    grid-template-columns: 1fr 250px;
    align-items: center;
    gap: 40px;
    width: 100%;
}

.about-commitment-title {
    margin-bottom: 1.5rem;
}

.about-commitment-paragraph {
    margin-bottom: 1.5rem;
}

.about-commitment-list {
    margin: 20px 0;
    padding: 0;
}

.about-commitment-row {
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
}

.about-commitment-row::before {
    position: absolute;
    left: 0;
}

.about-commitment-world-icon {
    justify-self: center;
    width: 100%;
    max-width: 250px;
    height: auto;
}

/* --- Subscribe Section Layout --- */
.subscribe-section {
    align-items: center;
}

.subscribe-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 60px;
}

.subscribe-options {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 360px));
    grid-auto-rows: auto;
    justify-content: center;
    align-items: start;
    gap: clamp(18px, 2.4vw, 34px);
    row-gap: 8px;
    width: 100%;
}

.subscribe-option {
    position: relative;
    display: grid;
    grid-template-rows: subgrid;
    grid-row: span 7;
}

.subscribe-option-floating-badge {
    position: absolute;
    top: -20px;
    left: 25%;
    z-index: 10;
    display: block;
    width: 40%;
    margin: 0 auto 18px;
    transform: translateX(-50%);
}

.subscribe-option-type-badge {
    display: block;
    width: 50%;
    margin: 0 auto 18px;
}

.subscribe-option-desc {
    margin: 0 0 25px;
}

.subscribe-option-title {
    margin: 0 0 35px;
}

.subscribe-option-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0;
    margin: 0 0 20px;
}

.subscribe-option-feature {
    position: relative;
    padding-left: 19px;
}

.subscribe-option-feature::before {
    margin-right: 8px;
}

.subscribe-option-btn {
    justify-self: center;
    width: 70%;
}

.subscribe-option-coming-soon {
    justify-self: center;
    width: 70%;
}

/* --- Contacts Section Layout --- */
.contacts-section {
    display: block;
    scroll-snap-align: none;
    min-height: auto;
    padding: 80px 0 60px;
}

.contacts-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: start;
    gap: clamp(40px, 8vw, 120px);
    margin: 0 auto;
}

.contacts-brand {
    display: grid;
    grid-template-rows: auto auto 1fr 1fr;
    align-items: start;
    height: 100%;
}

.contacts-brand .section-title {
    grid-row: 1;
}

.contacts-logo {
    grid-row: 2;
    justify-self: center;
    width: clamp(200px, 12vw, 800px);
}

.contacts-details {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: repeat(3, auto);
    align-items: start;
    gap: clamp(20px, 8vw, 40px);
    width: 100%;
}

.contacts-detail {
    margin-bottom: clamp(20px, 8vw, 50px);
}

.contacts-detail-title {
    margin-bottom: 15px;
}

.contacts-social-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* --- Site Footer Layout --- */
.site-footer {
    scroll-snap-align: end;
    width: 100%;
    padding: 40px 0 20px;
}

.site-footer-company-reg {
    width: min(90%, 1440px);
    margin: 0 auto 30px;
}

.site-footer-legal {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    width: min(90%, 1440px);
    margin: 0 auto;
}

.site-footer-links {
    display: flex;
    align-items: center;
    gap: 15px;
}


/* --- Privacy Policy Layout --- */
/* --- Terms Layout --- */
.privacy-container,
.terms-container {
    width: min(90%, 800px); /* Narrower than homepage for readability */
    margin: 120px auto 80px; /* Space for fixed header + bottom breathing room */
}

.privacy-section,
.terms-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: clamp(1rem, 2vw, 3rem);
}

.privacy-section-list,
.terms-section-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding-left: 1.5rem; /* Indent for bullets */
}

.privacy-footer,
.terms-footer {
    margin-top: clamp(1rem, 2vw, 3rem);
}

/* --- Free Subscribe Layout --- */
.free-subscribe-container {
    display: block;
    flex-direction: column;
    align-items: center;
    margin: 120px auto 80px;
    width: min(90%, 1000px); /* Narrower than homepage for readability */
}

.free-subscribe-title {
    margin-bottom: 0.5rem;
}

.free-subscribe-subtitle {
    margin-bottom: 1.5rem;
}

.free-subscribe-inputs {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 50%;
    min-width: 400px;
    max-width: 500px;
    margin: 2rem 0;
    justify-self: center;
}

.free-subscribe-accept {
    display: flex;
    align-items: flex-start; /* Aligns checkbox with top of multiline text */
    gap: 12px;
    text-align: left;
    max-width: 500px;
    margin-bottom: 2rem;
    justify-self: center;
}

.free-subscribe-accept label {
    display: flex;
    align-items: flex-start; /* Aligns box with the first line of text */
    gap: 12px;               /* Space between box and text */
    cursor: pointer;
    text-align: left;
}

/* --- Custom Checkbox Skeleton --- */
.free-subscribe-accept-checkbox {
    /* Hide the default browser box */
    appearance: none;
    -webkit-appearance: none;

    /* Define the structural size */
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    cursor: pointer;
    display: grid;
    place-content: center; /* Centers the checkmark later */
    margin-top: 4px;
}

/* Create the checkmark (visual symbol) logic */
.free-subscribe-accept-checkbox::before {
    content: "";
    width: 12px;
    height: 12px;
    transform: scale(0); /* Hidden by default */
    transition: 120ms transform ease-in-out;
    background-color: var(--light-yellow);
    /* Create a small checkmark shape using clip-path */
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

/* Show the checkmark when checked */
.free-subscribe-accept-checkbox:checked::before {
    transform: scale(1);
}

.free-subscribe-submit-btn {
    justify-self: center;
    margin-bottom: 65px;
}

/* --- Mobile Specific Adjustments --- */
@media (max-width: 992px) {
    .site-header-menu {
        display: flex;
    }

    .site-header-buttons {
        position: absolute;
        top: 100%;
        right: 5%;
        z-index: 1999;
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 1.5rem;
        width: auto;
        min-width: 200px;
        height: auto;
        padding: 2rem;
        transform: translateY(10px) scale(0.95);
        opacity: 0;
        visibility: hidden;
        transform-origin: top right;
    }

    .site-header-button {
        width: max-content;
    }

    .back-index-button {
        display: block;
        width: 100%;
        padding: 20px;
    }

    .hero-section {
        height: auto;
        min-height: 60vh;
        padding-top: 100px;
        padding-bottom: 40px;
    }

    .hero-container {
        gap: 1.5rem;
    }

    .intro-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .intro-content {
        align-items: center;
    }

    .signature-method-cards {
        grid-template-columns: 1fr;
    }

    .skill-level-row {
        grid-template-columns: 1fr;
        justify-items: center;
        text-align: center;
    }

    .learning-packs-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .learning-packs-content {
        order: 2;
        align-items: center;
        text-align: center;
    }

    .learning-packs-visual {
        order: 1;
    }

    .about-intro,
    .about-commitment {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-profile {
        justify-self: center;
    }

    .about-text {
        justify-self: left;
    }

    .subscribe-options {
        grid-template-columns: 1fr;
    }

    .subscribe-option:nth-child(3) {
        grid-column: auto;
        max-width: none;
    }

    .contacts-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .contacts-brand {
        align-items: center;
    }

    .contacts-details {
        grid-template-columns: 1fr;
    }

    .contacts-details .contacts-detail:last-child {
        grid-column: span 1;
    }

    .site-footer-legal {
        flex-direction: column;
        text-align: center;
    }

    .site-footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }

    .privacy-container,
    .terms-container {
        margin-top: 100px; /* Slightly less space on mobile */
    }
}

/* --- Intermediate Size --- */
@media (max-width: 1100px) {
    .subscribe-options {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        row-gap: 40px;
    }

    .subscribe-option:nth-child(2) {
        transform: none;
    }

    .subscribe-option:nth-child(3) {
        grid-column: 1 / -1;
        max-width: 540px;
        margin: 0 auto;
    }
}