/* ═══════════════════════════════
   HERO
═══════════════════════════════ */
.lang-hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: #020b18;
}

.lang-hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0,180,255,0.15) 0%, transparent 70%), radial-gradient(ellipse 40% 40% at 80% 80%, rgba(0,230,200,0.08) 0%, transparent 60%);
}

#langParticles {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.lang-hero-content {
    position: relative;
    z-index: 2;
}

.lang-badge {
    display: inline-block;
    padding: 10px 28px;
    border-radius: 50px;
    background: linear-gradient(135deg, rgba(0,180,255,0.15), rgba(0,230,200,0.05));
    border: 1px solid rgba(0,180,255,0.35);
    color: #00b4ff;
    font-weight: 700;
    font-size: 13px;
    letter-spacing: 3px;
    margin-bottom: 24px;
}

.lang-hero h1 {
    font-size: 80px;
    font-weight: 900;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffffff 0%, #00b4ff 40%, #00e6c8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.lang-hero p {
    color: rgba(255,255,255,0.5);
    font-size: 18px;
    line-height: 2;
    margin-bottom: 48px;
}

.lang-hero-stats {
    display: inline-flex;
    align-items: center;
    gap: 32px;
    padding: 24px 48px;
    background: rgba(0,180,255,0.05);
    border: 1px solid rgba(0,180,255,0.15);
    border-radius: 24px;
    backdrop-filter: blur(20px);
}

.lang-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

    .lang-stat strong {
        font-size: 28px;
        font-weight: 900;
        color: #00b4ff;
    }

    .lang-stat span {
        font-size: 12px;
        color: rgba(255,255,255,0.4);
    }

.lang-stat-divider {
    width: 1px;
    height: 48px;
    background: rgba(0,180,255,0.2);
}

.lang-scroll-hint {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, rgba(0,180,255,0.8), transparent);
    margin: 0 auto;
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 1;
        transform: scaleY(1);
    }

    50% {
        opacity: 0.3;
        transform: scaleY(0.5);
    }
}

/* ═══════════════════════════════
   SERVICES
═══════════════════════════════ */
.lang-services {
    background: #020b18;
    padding: 100px 0;
}

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

.section-tag {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 50px;
    background: rgba(0,180,255,0.08);
    border: 1px solid rgba(0,180,255,0.2);
    color: #00b4ff;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.lang-services .section-header h2,
.lang-teachers .section-header h2 {
    font-size: 48px;
    font-weight: 900;
    color: #ffffff;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: linear-gradient(160deg, #071525, #040f1e);
    border: 1px solid rgba(0,180,255,0.1);
    border-radius: 28px;
    padding: 36px 28px;
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
    cursor: default;
}

    .service-card:hover {
        transform: translateY(-8px);
        border-color: rgba(0,180,255,0.4);
        box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 40px rgba(0,180,255,0.08);
    }

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 20px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 10px;
}

.service-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.4);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-level {
    display: flex;
    align-items: center;
    gap: 12px;
}

    .service-level span {
        font-size: 12px;
        color: #00b4ff;
        font-weight: 700;
        white-space: nowrap;
    }

.level-bar {
    flex: 1;
    height: 4px;
    background: rgba(0,180,255,0.1);
    border-radius: 2px;
    overflow: hidden;
}

.level-fill {
    height: 100%;
    background: linear-gradient(90deg, #00b4ff, #00e6c8);
    border-radius: 2px;
    transition: width 1s ease;
}

/* ═══════════════════════════════
   TEACHERS
═══════════════════════════════ */
.lang-teachers {
    background: #020b18;
    padding: 0 0 120px;
}

.lang-teacher-card {
    position: relative;
    background: linear-gradient(160deg, #071525, #040f1e);
    border: 1px solid rgba(0,180,255,0.1);
    border-radius: 28px;
    padding: 32px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

    .lang-teacher-card:hover {
        transform: translateY(-8px);
        border-color: rgba(0,180,255,0.4);
        box-shadow: 0 24px 60px rgba(0,0,0,0.5), 0 0 40px rgba(0,180,255,0.08);
    }

.lang-card-glow {
    position: absolute;
    top: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0,180,255,0.12) 0%, transparent 70%);
    pointer-events: none;
}

.lang-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.lang-teacher-img {
    position: relative;
    width: 80px;
    height: 80px;
}

    .lang-teacher-img img {
        width: 80px;
        height: 80px;
        border-radius: 50%;
        object-fit: cover;
        border: 2px solid rgba(0,180,255,0.3);
        position: relative;
        z-index: 2;
    }

.lang-img-ring {
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    border: 1.5px solid transparent;
    background: linear-gradient(135deg, #00b4ff, transparent, #00e6c8) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    animation: ringRotate 5s linear infinite;
}

@keyframes ringRotate {
    to {
        transform: rotate(360deg);
    }
}

.lang-teacher-flag {
    font-size: 32px;
}

.lang-card-body h4 {
    font-size: 18px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 6px;
}

.lang-card-body span {
    display: block;
    font-size: 13px;
    color: #00b4ff;
    margin-bottom: 20px;
}

.lang-profile-btn {
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(0,180,255,0.3);
    border-radius: 14px;
    background: rgba(0,180,255,0.06);
    color: #00b4ff;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
}

    .lang-profile-btn:hover {
        background: rgba(0,180,255,0.15);
        border-color: rgba(0,180,255,0.6);
    }

/* ═══════════════════════════════
   MODAL
═══════════════════════════════ */
.lang-modal {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s, visibility .4s;
    z-index: 99999;
}

    .lang-modal.show {
        opacity: 1;
        visibility: visible;
    }

.lang-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(2,11,24,0.9);
}

.lang-modal-content {
    position: relative;
    z-index: 5;
    width: 820px;
    max-width: 92%;
    background: linear-gradient(160deg, #071525, #040f1e);
    border: 1px solid rgba(0,180,255,0.25);
    border-radius: 36px;
    padding: 50px;
    display: flex;
    gap: 48px;
    align-items: center;
    overflow: hidden;
}

    .lang-modal-content::before {
        content: '';
        position: absolute;
        top: -80px;
        left: -80px;
        width: 250px;
        height: 250px;
        background: radial-gradient(circle, rgba(0,180,255,0.1) 0%, transparent 70%);
        pointer-events: none;
    }

.lang-close-modal {
    position: absolute;
    left: 24px;
    top: 20px;
    background: rgba(0,180,255,0.06);
    border: 1px solid rgba(0,180,255,0.2);
    color: rgba(255,255,255,0.6);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    line-height: 1;
}

    .lang-close-modal:hover {
        background: rgba(0,180,255,0.15);
        border-color: rgba(0,180,255,0.5);
        color: #00b4ff;
    }

.lmodal-left {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    flex-shrink: 0;
}

.lmodal-img-wrapper {
    position: relative;
    width: 160px;
    height: 160px;
}

    .lmodal-img-wrapper img {
        width: 160px;
        height: 160px;
        border-radius: 50%;
        object-fit: cover;
        border: 3px solid rgba(0,180,255,0.4);
        position: relative;
        z-index: 2;
    }

.lmodal-img-ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: linear-gradient(135deg, #00b4ff, transparent, #00e6c8) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: destination-out;
    mask-composite: exclude;
    animation: ringRotate 4s linear infinite;
}

.lmodal-badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 50px;
    background: rgba(0,180,255,0.1);
    border: 1px solid rgba(0,180,255,0.3);
    color: #00b4ff;
    font-size: 13px;
    font-weight: 700;
}

.lmodal-right h2 {
    font-size: 28px;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 12px;
}

.lmodal-right p {
    color: rgba(255,255,255,0.5);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 32px;
}

.lmodal-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px 24px;
    background: rgba(0,180,255,0.05);
    border: 1px solid rgba(0,180,255,0.15);
    border-radius: 16px;
}

.lmodal-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

    .lmodal-stat strong {
        font-size: 24px;
        font-weight: 900;
        color: #00b4ff;
    }

    .lmodal-stat span {
        font-size: 12px;
        color: rgba(255,255,255,0.4);
    }

.lmodal-stat-divider {
    width: 1px;
    height: 44px;
    background: rgba(0,180,255,0.2);
}
/* Supervisor */

.supervisor-card {
    transform: scale(1.08);
    border: 2px solid rgba(0,180,255,.25);
}

    .supervisor-card:hover {
        transform: translateY(-8px) scale(1.08);
    }

    .supervisor-card .lang-teacher-img,
    .supervisor-card .lang-teacher-img img {
        width: 100px;
        height: 100px;
    }

    .supervisor-card .lang-card-body h4 {
        font-size: 22px;
        font-weight: 900;
    }

    .supervisor-card .lang-card-body span {
        font-size: 15px;
        font-weight: 700;
    }

    .supervisor-card .lang-profile-btn {
        font-size: 15px;
        padding: 14px;
    }

    .supervisor-card .lang-teacher-flag {
        font-size: 40px;
    }

/* ===================================================
   MOBILE
=================================================== */

@media (max-width: 768px) {

    html,
    body {
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }

    /* جلوگیری از ایجاد عرض اضافی */

    .container,
    .container-fluid,
    .row,
    .lang-hero,
    .lang-services,
    .lang-teachers {
        max-width: 100%;
        overflow-x: hidden;
    }

    /* HERO */

    .lang-hero {
        min-height: 90vh;
        padding: 90px 0 60px;
    }

        .lang-hero h1 {
            font-size: 42px;
            line-height: 1.3;
        }

        .lang-hero p {
            font-size: 16px;
            padding: 0 15px;
        }

    .lang-badge {
        font-size: 12px;
        padding: 8px 18px;
        letter-spacing: 1px;
    }

    /* آمار */

    .lang-hero-stats {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 18px;
        width: 100%;
        max-width: 320px;
        margin: auto;
        padding: 20px;
    }

    .lang-stat-divider {
        width: 70%;
        height: 1px;
    }

    /* SERVICES */

    .lang-services {
        padding: 70px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card {
        padding: 28px 22px;
    }

    /* HEADER TITLES */

    .lang-services .section-header h2,
    .lang-teachers .section-header h2 {
        font-size: 34px;
    }

    /* TEACHERS */

    .lang-teachers {
        padding-bottom: 80px;
    }

    .supervisor-card {
        transform: none;
    }

        .supervisor-card:hover {
            transform: translateY(-8px);
        }

        .supervisor-card .lang-teacher-img,
        .supervisor-card .lang-teacher-img img {
            width: 90px;
            height: 90px;
        }

    /* MODAL */

    .lang-modal {
        padding: 15px;
    }

    .lang-modal-content {
        width: 100%;
        max-width: 100%;
        padding: 24px;
        display: flex;
        flex-direction: column;
        gap: 24px;
        border-radius: 24px;
    }

    .lmodal-left {
        width: 100%;
    }

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

        .lmodal-right h2 {
            font-size: 24px;
        }

        .lmodal-right p {
            font-size: 14px;
        }

    .lmodal-stats {
        flex-direction: column;
        gap: 16px;
    }

    .lmodal-stat-divider {
        width: 70%;
        height: 1px;
    }

    .lmodal-img-wrapper {
        width: 130px;
        height: 130px;
    }

        .lmodal-img-wrapper img {
            width: 130px;
            height: 130px;
        }

    .lang-close-modal {
        left: 15px;
        top: 15px;
    }
}