:root {
    --primary: #004c97;
    --secondary: #0f172a;
    --accent: #e2e8f0;
    --background: #ebf1ff ;
    /* ; #f8fafc; */
    --text: #334155;
    --max-width: 1200px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
     font-family: "Plus Jakarta Sans", sans-serif;
    /* font-family: 'Inter', sans-serif; */
    color: var(--text);
    line-height: 1.7;
    background: var(--background);
}


h1, h2, h3 {
 font-family: "Plus Jakarta Sans", sans-serif;
}

h2 {
font-size:16px;
}

/* ================= HEADER ================= */

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: white;
    border-bottom: 1px solid #e5e7eb;
}

.nav-container {
    max-width: var(--max-width);
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .9rem 1.5rem;
}




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

.hero {
    background: linear-gradient(135deg, #004c97 0%, #0f172a 100%);
    color: white;
    padding: 2rem 1.5rem;
}


.hero-content {
    max-width: var(--max-width);
    margin-left:2rem;    
}

.hero h1 {
    font-size: clamp(1rem, 5vw, 2rem);
    line-height: 1.15;
}

.hero p {
    max-width: 1000px;
    font-size: 1.15rem;
    opacity: 0.95;
}




.hero-intro {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0rem;
}

.hero-logo {
    width: 80px;
    object-fit: contain;
    flex-shrink: 0;

    transition: transform 0.1s linear;
}

.container {
    max-width: var(--max-width);
    margin: auto;
    margin-bottom:0rem;
    margin-top:0rem;
    padding: 2rem 1.5rem;
}

section {
    scroll-margin-top: 100px;
}

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

.section-title {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.card {
    background: white;
    padding: 2rem;
    padding-top:1rem;
    padding-bottom:1rem;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,.05);
}

.agenda-card {
     background: white;
    padding: 2rem;
    padding-top:1rem;
    padding-bottom:1rem;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,.05);
    max-width: 900px;
    margin: 0 auto;
}

.container + .container {
    margin-top: -1rem;
}

ul {
    padding-left: 1.3rem;
}

/* ================= AGENDA ================= */

.agenda-list {
    display: grid;
    gap: 0rem;
}

.agenda-item, .agenda-item-break,.agenda-item1, .agenda-item2, .agenda-item3 {
        font-size: 1.1rem;
        border-radius: 8px;
        padding: 1.15rem;
}

.agenda-item {
    background: var(--background);
    border-left: 5px solid var(--primary);

}

.agenda-item-break {
    background: white;

}

.agenda-item3 {
    background:  #dbe6ff ;
    border-left: 5px solid var(--secondary);
}

.agenda-item1 {
    background: #FDE3D1;
    border-left: 5px solid #ff8832;
}

.agenda-item2 {
    background: #ffeee3;
    border-left: 5px solid #ff8832;
}



/* ================= ORGANIZERS ================= */

.organizers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(260px,1fr));
    gap: 2rem;
}

.organizer-card {
    background: white;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,.05);
}

.organizer-card img {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    margin: 2rem auto 1rem;
    margin-bottom:0rem;
    display: block;
    border: 4px solid #f1f5f9;
}

.organizer-content {
    text-align: center;
    padding: 0.4rem 1.5rem 2rem;
}

.organizer-content h3 {
    color: var(--secondary);
    margin-bottom: .5rem;
}

.organizer-content p {
    font-size: .95rem;
}

/* ================= KEYNOTE SPEAKER ================= */

.keynote-card {
    background: white;
    display: grid;
    grid-template-columns: minmax(220px, 0.8fr) minmax(0, 2fr);
    overflow: hidden;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,.05);
}

.keynote-profile {
    padding: 2rem;
    text-align: center;
}

.keynote-profile img {
    width: 160px;
    height: 160px;
    display: block;
    object-fit: cover;
    margin: 0 auto 0.5rem;
    border: 4px solid #f1f5f9;
    border-radius: 50%;
}

.keynote-profile-content h3 {
    color: var(--secondary);
    margin-bottom: .5rem;
}

.keynote-profile-content p {
    font-size: .95rem;
}

.keynote-bio {
    display: flex;
    align-items: center;
    padding: 2rem;
    border-left: 1px solid #e5e7eb;
}

.keynote-bio a {
    color: var(--primary);
    text-decoration: none;
    font-weight: bold;
}

.keynote-bio a:hover {
    color: #0077b5;
    transform: translateY(-2px);
}

/* ================= HIGHLIGHTS ================= */

.highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap: 1.5rem;
}

.highlight-box {
    background: white;
    padding: 1.75rem;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,.05);
}

.highlight-box h3 {
    margin-bottom: .8rem;
    color: var(--primary);
}

.highlight {
    color: var(--primary);
    font-weight: 600;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 0.75rem;
}

.social-links a {
    color: var(--primary);
    font-size: 1.3rem;
    transition: all 0.2s ease;
}

.social-links a:hover {
    color: #0077b5;
    transform: translateY(-2px);
}


/* ================= FOOTER ================= */

footer {
    background: var(--secondary);
    color: white;
    text-align: center;
    padding: 2rem;
}

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

@media (max-width: 768px) {

    /* Smaller sticky header */
    header {
        position: sticky;
        top: 0;
    }

    /* More compact hero */
    .hero {
        padding: 1rem;
    }

    .hero-intro {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .hero-content {
        margin-left: 0;
    }

    .hero-logo {
        width: 60px;
    }

    .hero h1 {
        font-size: 1.8rem;
        line-height: 1.1;
    }

    .hero h2 {
        font-size: 1rem;
        margin-top: 0.25rem;
    }

    .hero p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    /* Reduce section spacing */
    .container {
        padding: 1rem;
    }

    .card,
    .agenda-card {
        padding: 1.25rem;
    }

    /* Agenda items */
    .agenda-item,
    .agenda-item1,
    .agenda-item2,
    .agenda-item3,
    .agenda-item-break {
        padding: 0.9rem;
        font-size: 0.95rem;
    }

    /* Titles */
    .section-title {
        font-size: 1.25rem;
    }

    /* Organizer cards */
    .organizer-card img {
        width: 120px;
        height: 120px;
        margin-top: 1.5rem;
    }

    .organizer-content {
        padding: 0.5rem 1rem 1.5rem;
    }

    .keynote-card {
        grid-template-columns: 1fr;
    }

    .keynote-profile {
        padding: 1.5rem 1rem 1rem;
    }

    .keynote-profile img {
        width: 120px;
        height: 120px;
    }

    .keynote-bio {
        padding: 1rem 1.25rem 1.5rem;
        border-top: 1px solid #e5e7eb;
        border-left: 0;
    }

    /* Fix scroll offset for sticky header */
    section {
        scroll-margin-top: 60px;
    }
}

/* Extra small phones */
@media (max-width: 480px) {

    .hero {
        padding: 0.75rem;
    }

    .hero-logo {
        width: 50px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero h2 {
        font-size: 0.9rem;
    }

    .hero p {
        font-size: 0.8rem;
    }

    .card,
    .agenda-card {
        padding: 1rem;
    }

    .agenda-item,
    .agenda-item1,
    .agenda-item2,
    .agenda-item3,
    .agenda-item-break {
        font-size: 0.9rem;
        padding: 0.8rem;
    }
}