/* Import a clean, modern font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif !important;
    background: #f9fafb;
    color: #2d2d2d;
    line-height: 1.6;
}

/* Header / Banner */
#confTitle {
    font-weight: 700;
    font-size: 2.4rem;
    color: #2b2d42;
    text-align: center;
    margin-bottom: 0.5rem;
}

#confSubTitle {
    font-size: 1.2rem;
    color: #6c757d;
    text-align: center;
    margin-bottom: 1.5rem;
}

/* === HEADER LAYOUT WITH LOGO LEFT === */
#header {
    display: flex;
    align-items: center;
    justify-content: center; /* centers everything horizontally */
    gap: 1.5rem; /* space between logo and text */
    background: var(--bg-gradient); /* use the gradient from before */
    padding: 2rem;
    border-radius: 0 0 2rem 2rem;
    box-shadow: 0 6px 25px rgba(0,0,0,0.2);
}

/* Logo smaller + aligned left */
#header img {
    max-height: 70px !important;  /* shrink the logo */
    width: auto;
    flex-shrink: 0;
    border-radius: 0.5rem; /* optional rounded edges */
}

/* Conference title block aligned right of logo */
#confTitle {
    font-size: 2.2rem;
    font-weight: 700;
    margin: 0;
    text-align: left;
    color: white;
}

#confSubTitle {
    font-size: 1.1rem;
    margin-top: 0.3rem;
    text-align: left;
    color: rgba(255,255,255,0.9);
}

/* Navigation menu */
#main-navigation {
    background: #ffffff;
    border-radius: 1rem;
    padding: 0.6rem 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

#main-navigation li a {
    font-weight: 600;
    color: #444 !important;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

#main-navigation li a:hover {
    background: #48b1bf;
    color: white !important;
}

/* Section titles */
h2, .section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #22223b;
    border-left: 4px solid #e63946;
    padding-left: 0.6rem;
    margin-top: 2rem;
}

/* Content cards */
.contribution, .session, .block {
    background: #ffffff;
    border-radius: 1rem;
    padding: 1rem 1.2rem;
    margin-bottom: 1rem;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.contribution:hover, .session:hover, .block:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
}

/* Buttons */
button, .i-button, input[type="submit"], .action-button {
    background: linear-gradient(135deg, #ff6f61, #ff9671);
    border: none;
    color: white !important;
    font-weight: 600;
    border-radius: 0.6rem;
    padding: 0.5rem 1.2rem;
    transition: background 0.2s ease, transform 0.15s ease;
}

button:hover, .i-button:hover, input[type="submit"]:hover, .action-button:hover {
    background: linear-gradient(135deg, #ff9671, #ffc75f);
    transform: scale(1.05);
}

/* Links */
a {
    color: #06beb6;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #e63946;
}

/* Footer */
#footer {
    background: #2b2d42;
    color: #f8f9fa;
    padding: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
    border-radius: 2rem 2rem 0 0;
}