:root {
    --primary: #0b3c5d;
    --secondary: #1c7293;
    --accent: #f0b429;
    --bg-light: #f5f7fa;
    --text-dark: #1f2933;
}

.book-image-box {
    height: 220px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 10px;
    background: #f8fafc;
}

.book-image-box img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}

.book-card {
    min-height: 420px;
}

.book-cover {
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.book-card:hover .book-cover {
    transform: scale(1.05);
}

.editorial-card {
    border-radius: 14px;
    background: #ffffff;
}

.email-link {
    color: var(--secondary);
    font-size: 0.9rem;
    text-decoration: none;
}

.email-link:hover {
    text-decoration: underline;
}

/* GLOBAL */
body {
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    scroll-behavior: smooth;
}

/* NAVBAR */
.navbar .nav-link {
    color: #ffffff !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar .nav-link:hover {
    color: #00bcd4 !important;
    transform: translateY(-1px);
}

.navbar {
    background-color: var(--primary);
    box-shadow: 0 2px 12px rgb(0, 0, 12);
}

.logo {
    height: 52px;
}

/* HERO WITH LOGO WATERMARK */
.hero {
    position: relative;
    min-height: 50vh;
    padding: 140px 20px 120px;

    background:
        linear-gradient(
            135deg,
            rgba(11,60,93,0.96),
            rgba(28,114,147,0.96)
        ),
        url("../Images/Frame 5.svg");

    background-repeat: no-repeat;
    background-position: center center;
    background-size: contain;  
    background-blend-mode: soft-light;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.04);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: #ffffff;
    text-align: center;
}

.hero h1 {
    font-weight: 700;
    letter-spacing: 1px;
}

.hero p {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* SECTIONS */
section h2 {
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

section h2::after {
    content: "";
    width: 70px;
    height: 3px;
    background: var(--secondary);
    display: block;
    margin: 12px auto 0;
    border-radius: 3px;
}

/* CARDS */
.card {
    border: none;
    border-radius: 14px;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 14px 32px rgba(0,0,0,0.12);
}

/* PUBLICATION BUTTON */
.book-card .btn {
    border-radius: 30px;
    background-color: var(--secondary);
    border: none;
}

.book-card .btn:hover {
    background-color: var(--primary);
}

/* CONTACT */
#contact a {
    color: var(--secondary);
    font-weight: 600;
    text-decoration: none;
}

#contact a:hover {
    text-decoration: underline;
}
.contact-section {
    background: #0f172a; /* dark professional background */
    color: #ffffff;
}

.contact-card {
    max-width: 600px;
    padding: 30px;
    border-radius: 12px;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.email-link {
    color: #00bcd4;
    text-decoration: none;
    transition: color 0.3s ease;
}

.email-link:hover {
    color: #f4c542;
    text-decoration: underline;
}

.phone {
    font-weight: 600;
    letter-spacing: 0.5px;
}


/* FOOTER */
footer {
    background-color: var(--primary);
    color: #e5e7eb;
    font-size: 0.9rem;
}