/* =========================================================
   BRUDER KLAUS SCHOOL - PREMIUM HERO SLIDER
   Brand:
   Navy  : #0D0B61
   White : #FFFFFF
   Gold  : #F4CE14
========================================================= */


/* =========================================================
   ROOT VARIABLES
========================================================= */

:root {

    --bks-navy: #0D0B61;
    --bks-white: #FFFFFF;
    --bks-gold: #F4CE14;

    --bks-overlay: rgba(5, 5, 30, 0.58);

}


/* =========================================================
   HERO CONTAINER
========================================================= */

.bks-hero {

    position: relative;

    width: 100%;

    height: min(88vh, 700px);

    min-height: 620px;

    overflow: hidden;

    background: var(--bks-navy);

    isolation: isolate;

}


/* =========================================================
   SLIDE WRAPPER
========================================================= */

.bks-slides {

    position: absolute;

    inset: 0;

    width: 100%;
    height: 100%;

}


/* =========================================================
   INDIVIDUAL SLIDE
========================================================= */

.bks-slide {

    position: absolute;

    inset: 0;

    width: 100%;
    height: 100%;

    opacity: 0;

    visibility: hidden;

    transform: scale(1.04);

    transition:
        opacity 0.9s ease,
        visibility 0.9s ease,
        transform 6s ease;

}


/* ACTIVE SLIDE */

.bks-slide.active {

    opacity: 1;

    visibility: visible;

    transform: scale(1);

}


/* =========================================================
   IMAGE
========================================================= */

.bks-slide-image {

    position: absolute;

    inset: 0;

    width: 100%;
    height: 100%;

    overflow: hidden;

}


.bks-slide-image img {

    width: 100%;
    height: 100%;

    object-fit: cover;

    object-position: center;

    display: block;

    transform: scale(1.02);

}


/* =========================================================
   CINEMATIC OVERLAY
========================================================= */

.bks-slide-overlay {

    position: absolute;

    inset: 0;

    z-index: 1;

    background:

        linear-gradient(
            90deg,
            rgba(5, 5, 30, 0.82) 0%,
            rgba(5, 5, 30, 0.64) 30%,
            rgba(5, 5, 30, 0.25) 65%,
            rgba(5, 5, 30, 0.18) 100%
        );

}


/* Bottom gradient */

.bks-slide-overlay::after {

    content: "";

    position: absolute;

    left: 0;
    right: 0;
    bottom: 0;

    height: 35%;

    background:
        linear-gradient(
            to top,
            rgba(0, 0, 0, 0.55),
            transparent
        );

}


/* =========================================================
   PREMIUM LIGHT EFFECT
========================================================= */

.bks-slide::before {

    content: "";

    position: absolute;

    z-index: 2;

    top: -20%;
    left: -30%;

    width: 35%;
    height: 150%;

    background:

        linear-gradient(
            90deg,
            transparent,
            rgba(255,255,255,0.09),
            transparent
        );

    transform: rotate(12deg);

    pointer-events: none;

    animation: bksLightSweep 7s ease-in-out infinite;

}


@keyframes bksLightSweep {

    0% {

        left: -40%;

    }

    50% {

        left: 120%;

    }

    100% {

        left: 120%;

    }

}


/* =========================================================
   HERO CONTENT
========================================================= */

.bks-hero-content {

    position: relative;

    z-index: 4;

    width: min(1200px, 90%);

    height: 100%;

    margin: 0 auto;

    display: flex;

    flex-direction: column;

    justify-content: center;

    align-items: flex-start;

    padding-top: 0px;

}


/* =========================================================
   EYEBROW
========================================================= */

.bks-eyebrow {

    display: flex;

    align-items: center;

    gap: 14px;

    margin-bottom: 22px;

    color: var(--bks-gold);

    font-size: clamp(17px, 1.5vw, 26px);

    font-weight: 800;

    letter-spacing: 5px;

    line-height: 1.2;

}


.bks-eyebrow i {

    width: 8px;
    height: 8px;

    background: var(--bks-gold);

    border-radius: 50%;

    display: inline-block;

    box-shadow:
        0 0 10px rgba(244,206,20,0.7);

}


/* =========================================================
   MAIN HEADING
========================================================= */

.bks-hero-content h1 {

    position: relative;

    margin: 0;

    max-width: 950px;

    color: var(--bks-white);

    font-size: clamp(64px, 5.4vw, 108px);

    font-weight: 900;

    line-height: 1;

    letter-spacing: -2.5px;

    text-shadow:
        0 8px 35px rgba(0,0,0,0.35);

}


/* GOLD WORD */

.bks-hero-content h1 span {

    color: var(--bks-white);

    position: relative;

}


/* Gold underline */

.bks-hero-content h1 span::after {

    content: "";

    position: absolute;

    left: 4px;

    bottom: -12px;

    width: 48%;

    height: 5px;

    border-radius: 10px;

    background: var(--bks-gold);

    box-shadow:
        0 0 18px rgba(244,206,20,0.65);

}


/* =========================================================
   DESCRIPTION
========================================================= */

.bks-hero-content p {

    max-width: 720px;

    margin: 24px 0 24px;

    color: rgba(255,255,255,0.94);

    font-size: clamp(19px, 1.4vw, 24px);

    font-weight: 400;

    line-height: 1.5;

    text-shadow:
        0 3px 15px rgba(0,0,0,0.5);

}


/* =========================================================
   BUTTON CONTAINER
========================================================= */

.bks-hero-buttons {

    display: flex;

    align-items: center;

    gap: 18px;

    flex-wrap: wrap;

}


/* =========================================================
   BUTTON BASE
========================================================= */

.bks-btn {

    position: relative;

    min-width: 150px;

    height: 52px;

    padding: 0 22px;

    border-radius: 50px;

    display: inline-flex;

    align-items: center;

    justify-content: center;

    gap: 10px;

    text-decoration: none;

    font-size: 15px;

    font-weight: 800;

    overflow: hidden;

    white-space: nowrap;

    transition:
        transform 0.35s ease,
        box-shadow 0.35s ease;

}


/* =========================================================
   BUTTON SHINE
========================================================= */

.bks-btn::before {

    content: "";

    position: absolute;

    top: 0;

    left: -120%;

    width: 80%;

    height: 100%;

    background:

        linear-gradient(
            100deg,
            transparent,
            rgba(255,255,255,0.55),
            transparent
        );

    transform: skewX(-20deg);

    transition: left 0.7s ease;

}


.bks-btn:hover::before {

    left: 140%;

}


.bks-btn:hover {

    transform: translateY(-4px);

}


/* =========================================================
   PRIMARY BUTTON
========================================================= */

.bks-btn-primary {

    color: var(--bks-navy);

    background: var(--bks-gold);

    box-shadow:
        0 12px 35px rgba(244,206,20,0.28);

}


.bks-btn-primary:hover {

    box-shadow:
        0 16px 45px rgba(244,206,20,0.45);

}


/* =========================================================
   SECONDARY BUTTON
========================================================= */

.bks-btn-secondary {

    color: var(--bks-navy);

    background: rgba(255,255,255,0.97);

    border: 1px solid rgba(255,255,255,0.8);

    box-shadow:
        0 12px 35px rgba(0,0,0,0.18);

}


.bks-btn-secondary:hover {

    background: var(--bks-white);

    box-shadow:
        0 16px 40px rgba(0,0,0,0.25);

}


/* =========================================================
   BUTTON ICON
========================================================= */

.bks-btn i {

    transition:
        transform 0.3s ease;

}


.bks-btn:hover i {

    transform: translateX(5px);

}


/* =========================================================
   SLIDER ARROWS
========================================================= */

.bks-slider-arrow {

    position: absolute;

    z-index: 10;

    top: 50%;

    width: 66px;
    height: 66px;

    transform: translateY(-50%);

    display: flex;

    align-items: center;
    justify-content: center;

    border: 2px solid var(--bks-gold);

    border-radius: 12px;

    background: rgba(13,11,97,0.48);

    backdrop-filter: blur(10px);

    -webkit-backdrop-filter: blur(10px);

    color: var(--bks-gold);

    font-size: 25px;

    cursor: pointer;

    transition:
        background 0.3s ease,
        color 0.3s ease,
        transform 0.3s ease,
        box-shadow 0.3s ease;

}


.bks-prev {

    left: 25px;

}


.bks-next {

    right: 25px;

}


.bks-slider-arrow:hover {

    color: var(--bks-navy);

    background: var(--bks-gold);

    box-shadow:
        0 0 25px rgba(244,206,20,0.45);

}


.bks-prev:hover {

    transform: translateY(-50%) translateX(-4px);

}


.bks-next:hover {

    transform: translateY(-50%) translateX(4px);

}


/* =========================================================
   DOTS
========================================================= */

.bks-slider-dots {

    position: absolute;

    z-index: 10;

    left: 50%;

    bottom: 24px;

    transform: translateX(-50%);

    display: flex;

    align-items: center;

    gap: 11px;

}


.bks-dot {

    width: 11px;
    height: 11px;

    padding: 0;

    border: none;

    border-radius: 50%;

    background: rgba(255,255,255,0.65);

    cursor: pointer;

    transition:
        width 0.3s ease,
        background 0.3s ease,
        box-shadow 0.3s ease;

}


.bks-dot.active {

    width: 30px;

    border-radius: 20px;

    background: var(--bks-gold);

    box-shadow:
        0 0 15px rgba(244,206,20,0.65);

}


/* =========================================================
   SCROLL INDICATOR
========================================================= */

.bks-scroll-indicator {

    position: absolute;

    z-index: 10;

    right: 34px;

    bottom: 25px;

    display: flex;

    align-items: center;

    gap: 9px;

    color: rgba(255,255,255,0.8);

    text-decoration: none;

    font-size: 10px;

    font-weight: 700;

    letter-spacing: 3px;

    writing-mode: vertical-rl;

}


.bks-scroll-indicator i {

    color: var(--bks-gold);

    animation:
        bksScrollArrow 1.5s ease-in-out infinite;

}


@keyframes bksScrollArrow {

    0%,
    100% {

        transform: translateY(0);

    }

    50% {

        transform: translateY(7px);

    }

}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 1100px) {

    .bks-hero {

        min-height: 600px;

        height: 78vh;

    }


    .bks-hero-content {

        width: 82%;

    }


    .bks-slider-arrow {

        width: 55px;
        height: 55px;

    }


    .bks-prev {

        left: 18px;

    }


    .bks-next {

        right: 18px;

    }

}


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

@media (max-width: 768px) {

    .bks-hero {

        width: 100%;
        height: auto;
        min-height: 0;
        aspect-ratio: 16 / 9;

        overflow: hidden;

    }

 .bks-slide-image img {

    width: 100%;

    height: 100%;

    object-fit: contain;

    object-position: center;

    display: block;

}


    .bks-slide-overlay {

        background:

            linear-gradient(
                90deg,
                rgba(5,5,30,0.80),
                rgba(5,5,30,0.53)
            );

    }


    .bks-hero-content {

    width: 88%;

    height: 100%;

    justify-content: center;

    padding-top: 0;

}


    .bks-eyebrow {

        gap: 9px;

        margin-bottom: 17px;

        font-size: 13px;

        letter-spacing: 3px;

    }


    .bks-eyebrow i {

        width: 5px;
        height: 5px;

    }


    .bks-hero-content h1 {

    max-width: 600px;

    font-size: clamp(30px, 7vw, 52px);

    line-height: 1.02;

    letter-spacing: -1px;

}


    .bks-hero-content h1 span::after {

        bottom: -7px;

        height: 3px;

    }


    .bks-hero-content p {

    max-width: 520px;

    margin: 15px 0 20px;

    font-size: clamp(13px, 3vw, 16px);

    line-height: 1.45;

}


    .bks-hero-buttons {

        gap: 11px;

    }


    .bks-btn {

    min-width: 130px;

    height: 46px;

    padding: 0 16px;

    font-size: 13px;

}


    .bks-slider-arrow {

        top: auto;

        bottom: 70px;

        width: 43px;
        height: 43px;

        border-radius: 10px;

        font-size: 16px;

    }


    .bks-prev {

        left: 18px;

    }


    .bks-next {

        right: 18px;

    }


    .bks-slider-arrow:hover {

        transform: none;

    }


    .bks-scroll-indicator {

        display: none;

    }


    .bks-slider-dots {

        bottom: 23px;

    }

}


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

@media (max-width: 480px) {

    .bks-hero {

        width: 100%;
        height: auto;
        min-height: 0;
        aspect-ratio: 16 / 9;

        overflow: hidden;

    }


    .bks-hero-content {

        width: 84%;

    }


    .bks-eyebrow {

        font-size: 11px;

        letter-spacing: 2px;

    }


    .bks-hero-content h1 {

    max-width: 95%;

    font-size: clamp(34px, 8.5vw, 42px);

    line-height: 1.02;

    letter-spacing: -0.8px;

}


    .bks-hero-content p {

    max-width: 95%;

    font-size: 14px;

    line-height: 1.35;

    margin: 8px 0 10px;

}


    .bks-hero-buttons {

    width: auto;

    display: flex;

    flex-direction: row;

    align-items: center;

    gap: 7px;

    flex-wrap: nowrap;

}


    .bks-btn {

    width: auto;

    min-width: 118px;

    height: 38px;

    padding: 0 13px;

    font-size: 13px;

    gap: 7px;

}


    .bks-slider-arrow {

        bottom: 65px;

    }


    .bks-prev {

        left: 12px;

    }


    .bks-next {

        right: 12px;

    }

}