/* ========================== COLORS ========================== */
:root {
    --dark: #001f3f;
    --dark-light: #0a2f5a;
    --blue: #00aaff;
    --white: #ffffff;
    --light: #f5f7fa;
    --text: #2d2d2d;
}

/* ========================== HERO CLEAN ========================== */
.hero-clean {
    width: 100%;
    overflow: hidden;
}

.hero-clean-img {
    width: 100%;
    height: auto;
    display: block;
}

/* ========================== SECTIONS ========================== */
.section {
    padding: 70px 0;
}
.section-dark {
    background: var(--dark);
    color: white;
}
.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
}
.section-title-light {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: white;
}

/* ========================== VIDEO ========================== */
.video-card,
.video-card-shadow {
    background: white;
    padding: 12px;
    border-radius: 14px;
    box-shadow: 0px 4px 15px rgba(0,0,0,0.1);
}
.video-card-shadow {
    background: var(--dark-light);
}
.video-card-shadow iframe {
    border-radius: 10px;
}
.video-caption {
    text-align: center;
    margin-top: 10px;
    font-size: 17px;
}

/* ========================== INFO BOX ========================== */
.info-box {
    background: white;
    padding: 30px;
    border-left: 5px solid var(--blue);
    border-radius: 10px;
    box-shadow: 0px 4px 15px rgba(0,0,0,0.06);
    font-size: 17px;
    line-height: 1.7;
}

/* ========================== SPEAKER CARDS ========================== */
.speaker-card {
    background: white;
    padding: 25px;
    text-align: center;
    border-radius: 14px;
    transition: 0.3s;
    box-shadow: 0px 4px 15px rgba(0,0,0,0.08);
}
.speaker-card:hover {
    transform: translateY(-5px);
    box-shadow: 0px 8px 20px rgba(0,0,0,0.15);
}
.speaker-card img {
    width: 170px;
    height: 170px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--blue);
    margin-bottom: 15px;
}

/* ========================== 5 columns layout ========================== */
.col-md-2_4 {
    width: 20%;
}

@media (max-width: 992px) {
    .col-md-2_4 {
        width: 33.333%;
    }
}

@media (max-width: 768px) {
    .col-md-2_4 {
        width: 50%;
    }
}

@media (max-width: 480px) {
    .col-md-2_4 {
        width: 100%;
    }
}

/* Center speaker highlight */
.special-center {
    transform: scale(1.08);
}

/* ========================== PROGRAM BOX ========================== */
.program-box {
    background: white;
    padding: 25px;
    border-left: 5px solid var(--blue);
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0px 4px 15px rgba(0,0,0,0.06);
}

/* ========================== PROGRAM BUTTON ========================== */
.btn-program {
    background: var(--blue);
    color: white;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    display: inline-block;
    transition: 0.3s;
}
.btn-program:hover {
    background: #0088cc;
    color: white;
}

/* ========================== REGISTRATION BUTTON ========================== */
.btn-register {
    background: var(--blue);
    color: white;
    padding: 14px 35px;
    font-size: 20px;
    font-weight: 600;
    border-radius: 10px;
    display: inline-block;
    transition: 0.3s;
    box-shadow: 0px 4px 12px rgba(0, 170, 255, 0.4);
    text-decoration: none;
}
.btn-register:hover {
    background: #0088cc;
    color: white;
    box-shadow: 0px 6px 15px rgba(0, 170, 255, 0.5);
}

@media (max-width: 768px) {
    .btn-register {
        width: 100%;
        padding: 16px;
        font-size: 18px;
    }
}
.info-card {
    background: #fff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.info-card h5 {
    font-weight: 600;
    margin-bottom: 8px;
}

.info-card-large {
    background: #fff;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    font-size: 18px;
    line-height: 1.6;
}

.styled-list {
    font-size: 18px;
    line-height: 1.8;
}

.styled-list li {
    margin-bottom: 8px;
}

.org-card {
    background: #fff;
    padding: 18px;
    border-radius: 12px;
    text-align: center;
    font-size: 18px;
    font-weight: 500;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}