/* ==========================================
   EXHIBITORS PAGE - PREMIUM DESIGN
   ========================================== */

/* Modern Design System Variables */
:root {
    --primary-color: #1a365d;
    --primary-light: #2c5282;
    --primary-dark: #0f2340;
    --secondary-color: #c9a227;
    --secondary-light: #e8c547;
    --accent-color: #38b2ac;
    --text-color: #2d3748;
    --text-light: #718096;
    --light-text: #ffffff;
    --background-light: #f7fafc;
    --background-white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #1a365d 0%, #2c5282 50%, #1a365d 100%);
    --gradient-gold: linear-gradient(135deg, #c9a227 0%, #e8c547 50%, #c9a227 100%);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 30px rgba(201, 162, 39, 0.3);
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 30px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-primary: 'Inter', 'Open Sans', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--background-light);
    padding-top: 87px;
}

.container {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.98) 0%, rgba(44, 82, 130, 0.98) 100%);
    backdrop-filter: blur(20px);
    color: var(--light-text);
    padding: 16px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.icon img {
    height: 55px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.mobile-menu-toggle {
    display: none;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 26px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-list a {
    color: var(--light-text);
    text-decoration: none;
    padding: 10px 18px;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.nav-list a:hover {
    background: rgba(255, 255, 255, 0.1);
}

.nav-list a.active {
    background: rgba(201, 162, 39, 0.2);
    border: 1px solid rgba(201, 162, 39, 0.3);
}

/* Button */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-gold);
    color: var(--primary-dark);
    padding: 14px 28px;
    text-decoration: none;
    border-radius: var(--border-radius-xl);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow), var(--shadow-glow);
}

.button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(201, 162, 39, 0.5);
}

/* Section Title */
.section-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 50px;
    color: var(--primary-color);
    padding-bottom: 20px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-gold);
    border-radius: 2px;
}

/* Exhibitor Hero */
.exhibitor-hero {
    height: 55vh;
    min-height: 400px;
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
    padding: 40px 20px;
}

.exhibitor-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.85) 0%, rgba(15, 35, 64, 0.9) 100%);
}

.exhibitor-hero .container {
    position: relative;
    z-index: 2;
}

.exhibitor-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 20px;
    text-shadow: 2px 4px 20px rgba(0, 0, 0, 0.4);
}

.exhibitor-hero p {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.95;
}

/* Category Filters */
.exhibitor-categories {
    display: flex;
    gap: 12px;
    margin: 40px 0;
    flex-wrap: wrap;
    justify-content: center;
}

.category-btn {
    padding: 12px 25px;
    background: var(--background-white);
    border: 2px solid rgba(26, 54, 93, 0.2);
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    color: var(--primary-color);
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Exhibitor Cards */
.exhibitors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.exhibitor-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 35px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.exhibitor-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.exhibitor-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid rgba(201, 162, 39, 0.3);
}

.exhibitor-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 10px;
    background: #fff;
}

.exhibitor-card h3 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 1.3rem;
}

.exhibitor-card .category {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.exhibitor-card .description {
    margin-bottom: 25px;
    flex-grow: 1;
    color: var(--text-light);
    line-height: 1.7;
}

.exhibitor-card .button {
    margin-top: auto;
    padding: 12px 24px;
    font-size: 0.9rem;
}

/* CTA Section */
.exhibitor-cta {
    padding: 100px 0;
    text-align: center;
    background: var(--gradient-primary);
    color: var(--light-text);
}

.exhibitor-cta h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    margin-bottom: 20px;
}

.exhibitor-cta p {
    font-size: 1.2rem;
    margin-bottom: 35px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

/* Footer */
footer {
    background: var(--gradient-primary);
    color: var(--light-text);
    padding: 80px 0 0;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-gold);
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
    margin-bottom: 50px;
}

.footer-info h4,
.footer-menu h4,
.footer-social h4 {
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-info p {
    margin-bottom: 12px;
    opacity: 0.9;
}

.footer-menu a {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-menu a:hover {
    color: var(--secondary-color);
    padding-left: 10px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

.social-icons img {
    width: 22px;
    height: 22px;
    filter: brightness(0) invert(1);
}

.footer-copyright {
    text-align: center;
    padding: 25px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.95rem;
    opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding-top: 80px;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .nav-list {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 20px;
    }

    .nav-list.active {
        display: flex;
    }

    .nav-list a {
        display: block;
        padding: 15px 20px;
    }

    .exhibitor-hero {
        height: auto;
        min-height: 350px;
        padding: 60px 20px;
    }

    .exhibitors-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-icons {
        justify-content: center;
    }
}