/**
 * Bootstrap Custom Styles for ECOSTP2027
 * Preserving original Enfold theme colors and styling
 */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* Color Variables - Matching Original Theme */
:root {
    --font-family-base: 'Poppins', sans-serif;
    --topbar-bg: #00afef; /* Bright blue for topbar */
    --header-bg: #ffffff; /* White for header */
    --header-separator: #b0d380; /* Light green separator */
    --footer-bg: #2e362d; /* Dark charcoal for footer */
    --socket-bg: #1a1a1a; /* Very dark for socket */
    --theme-color: #00afef; /* Theme blue */
    --text-dark: #2e362d;
    --text-light: #ffffff;
    --green-accent: #83a846; /* Green accent color */
}

/* Topbar Styling */
.topbar {
    background-color: var(--topbar-bg);
    padding: 6px 0;
    font-size: 13px;
    z-index: 1030;
    width: 100%;
}

.topbar .nav-link {
    color: var(--text-light);
    padding: 0.15rem 0.5rem;
    font-weight: 600;
    text-decoration: none;
    font-size: 13px;
}

.topbar .nav-link:hover {
    color: var(--text-light);
    opacity: 0.9;
}

.topbar-separator {
    color: var(--text-light);
    padding: 0 0.25rem;
    font-weight: 300;
}

.topbar-links {
    width: 100%;
}

/* Desktop: align to right, Mobile: center */
@media (min-width: 992px) {
    .topbar .topbar-links {
        justify-content: flex-end !important;
        width: auto;
    }
    
    .topbar .container-fluid {
        display: flex;
        justify-content: flex-end;
    }
}

/* Header Styling */
.header-main {
    background-color: var(--header-bg);
    padding: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    z-index: 1020;
    width: 100%;
}

.header-main.sticky-top {
    position: sticky;
    top: 0;
}

.header-main .navbar-brand img,
.header-main .navbar-brand .header-logo {
    min-height: 90px;
    max-height: 110px;
    height: auto;
    width: auto;
    object-fit: contain;
}

.header-info {
    font-size: 0.9rem;
    line-height: 1.4;
}

.conference-title {
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.conference-location {
    color: var(--green-accent);
    font-size: 0.85rem;
}

/* Header Separator */
.header-separator {
    height: 3px;
    background-color: var(--header-separator);
    width: 100%;
}

/* Main Navigation */
.main-navbar {
    background-color: transparent;
    padding: 0;
    width: 100%;
}

.main-navbar .container-fluid {
    flex-wrap: wrap;
}

/* Masaüstünde (1200px+): hamburger gizle, logo ve menü aynı satırda kalsın */
@media (min-width: 1200px) {
    .main-navbar .navbar-toggler {
        display: none !important;
    }
    
    /* Menünün alt satıra düşmesini engelle - logo ile aynı satırda */
    .main-navbar .container-fluid {
        flex-wrap: nowrap;
    }
}

/* Dar masaüstü (1200-1399px): logo min 90px, menü aralıkları dar */
@media (min-width: 1200px) and (max-width: 1399px) {
    .header-main .navbar-brand {
        margin-right: 0.75rem !important;
    }
    
    .header-main .navbar-brand img,
    .header-main .navbar-brand .header-logo {
        min-height: 90px;
        max-height: 90px;
    }
    
    .main-navbar .navbar-nav .nav-link {
        padding: 0.5rem 0.4rem;
        font-size: 0.95rem;
    }
    
    .main-navbar .navbar-nav .nav-link i {
        font-size: 0.95rem;
    }
    
    .menu-separator {
        padding: 0 0.2rem;
    }
}

.main-navbar .navbar-toggler,
.navbar-toggler {
    border: 2px solid var(--text-dark);
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    cursor: pointer;
}

.main-navbar .navbar-toggler:hover,
.navbar-toggler:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.main-navbar .navbar-toggler-icon,
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2846, 54, 45, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    width: 1.5em;
    height: 1.5em;
    display: inline-block;
}

.main-navbar .navbar-nav {
    align-items: center;
}

.main-navbar .navbar-nav .nav-item {
    position: relative;
}

.main-navbar .navbar-nav .nav-link {
    color: var(--text-dark);
    font-weight: 500;
    padding: 0.75rem 0.5rem;
    text-transform: none;
    position: relative;
    font-size: 1.20rem;
    transition: all 0.3s ease;
}

.main-navbar .navbar-nav .nav-link:hover {
    color: var(--theme-color);
}

.main-navbar .navbar-nav .nav-link.active {
    color: var(--text-dark);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

.main-navbar .navbar-nav .nav-link.active:hover {
    color: var(--theme-color);
}

.menu-separator {
    color: var(--text-dark);
    padding: 0 0.25rem;
    font-weight: 300;
    display: flex;
    align-items: center;
}

.main-navbar .navbar-nav .nav-link i {
    font-size: 1.1rem;
}

.main-navbar .navbar-nav .dropdown-menu {
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-top: 0;
    padding: 0.5rem 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

/* Smooth transition for dropdown when shown */
.main-navbar .navbar-nav .dropdown.show .dropdown-menu {
    animation: dropdownFadeIn 0.2s ease;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Smooth transition for dropdown */
.main-navbar .navbar-nav .dropdown {
    position: relative;
}

.main-navbar .navbar-nav .dropdown-item {
    padding: 0.5rem 1.5rem;
    color: var(--text-dark);
    transition: all 0.2s ease;
}

.main-navbar .navbar-nav .dropdown-item:hover {
    background-color: #f8f9fa;
    color: var(--theme-color);
}

/* Hero Slider */
.hero-slider {
    position: relative;
    overflow: hidden;
}

.hero-slider .carousel-item {
    height: 43.125vw;
    min-height: 500px;
    max-height: 840px;
}

.hero-slider .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: transparent;
    padding: 2rem;
    color: white;
}

/* Buton metin kutusunun altında kalsın; kutu metin genişliğinde */
.hero-caption .container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* Karanlık alan yalnızca metin kadar — modern kart */
.hero-caption-text {
    display: inline-block;
    width: fit-content;
    max-width: min(38rem, 100%);
    box-sizing: border-box;
    padding: 1.35rem 1.5rem;
    color: white;
    background: rgba(0, 0, 0, 0.58);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow:
        0 12px 40px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.carousel-item.active .hero-caption-text {
    animation: heroCaptionTextFadeIn 1.15s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes heroCaptionTextFadeIn {
    0% {
        opacity: 0;
        transform: translateY(32px) scale(0.96);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (prefers-reduced-motion: reduce) {
    .carousel-item.active .hero-caption-text {
        animation: heroCaptionTextFadeInReduced 0.5s ease forwards;
    }
}

@keyframes heroCaptionTextFadeInReduced {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hero-caption h3,
.hero-caption-text h3 {
    font-size: 60px;
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 1rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-caption h2,
.hero-caption-text h2 {
    font-size: 60px;
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 1rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-caption p,
.hero-caption-text p {
    font-size: 25px;
    margin-bottom: 1.5rem;
}

.hero-caption-text p:last-child {
    margin-bottom: 0;
}

.hero-caption .btn {
    background-color: var(--theme-color);
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0;
}

.hero-caption .btn:hover {
    background-color: #0099d6;
}

/* Mobile Hero */
@media (max-width: 991px) {
    .hero-slider .carousel-item {
        height: 122.28vw;
        min-height: 600px;
        max-height: 900px;
    }
    
    .hero-caption {
        left: 0;
        right: auto;
        width: 80%;
        max-width: 500px;
    }
    
    .hero-caption-text {
        padding: 1.25rem 1rem;
    }
    
    .hero-caption h3,
    .hero-caption-text h3,
    .hero-caption h2,
    .hero-caption-text h2 {
        font-size: 2rem;
    }
}

/* Section Styling */
.section-padding {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.section-title-border {
    width: 50px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 20px auto;
}

/* Welcome Section */
.welcome-section {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.co-chair-img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 0;
    margin-right: 15px;
    float: left;
}

/* Button Styling */
.btn-theme {
    background-color: var(--theme-color);
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 0;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.3s;
}

.btn-theme:hover {
    background-color: #0099d6;
    color: white;
}

.btn-theme i {
    margin-left: 8px;
}

/* Programme & Travel Section */
.programme-section,
.travel-section {
    text-align: center;
    padding: 40px 20px;
}

.programme-section h1,
.travel-section h1 {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

/* Sponsors Section */
.sponsors-section {
    padding: 60px 0;
}

.sponsors-section h2 {
    font-size: 2rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.sponsors-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    margin: 2rem 0 1.5rem;
    color: var(--text-dark);
}

.sponsor-logo {
    max-width: 100%;
    height: auto;
    margin: 1rem 0;
    transition: opacity 0.3s;
}

.sponsor-logo:hover {
    opacity: 0.8;
}

/* Footer Styling */
.footer-main {
    background-color: var(--footer-bg);
    color: var(--text-light);
    padding: 60px 0 40px;
}

.footer-main h3 {
    color: #b0d380;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

.footer-main p,
.footer-main a {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-main a:hover {
    color: #b0d380;
    text-decoration: none;
}

.footer-main .widget {
    margin-bottom: 2rem;
}

.footer-main .seperator {
    display: block;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.1);
    margin: 20px 0;
}

/* Socket Footer */
.socket-footer {
    background-color: var(--socket-bg);
    color: var(--text-light);
    padding: 20px 0;
    font-size: 0.9rem;
}

.socket-footer .copyright {
    color: var(--text-light);
}

.socket-footer .social-bookmarks a {
    color: var(--text-light);
    font-size: 1.2rem;
    margin-left: 15px;
}

.socket-footer .social-bookmarks a:hover {
    color: var(--theme-color);
}

/* Scroll to Top */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
}

.scroll-top.visible {
    opacity: 1;
}

.scroll-top:hover {
    background-color: var(--theme-color);
}

/* Responsive Adjustments - Tablet (iPad Pro) and below: hamburger menu */
@media (max-width: 1199px) {
    /* Navbar responsive - full width collapse on tablet/mobile */
    .main-navbar .navbar-collapse {
        flex-basis: 100%;
        flex-grow: 1;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid rgba(46, 54, 45, 0.1);
    }
    
    .main-navbar .navbar-nav {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        padding: 0.5rem 0;
    }
    
    .main-navbar .navbar-nav .nav-item {
        border-bottom: 1px solid rgba(46, 54, 45, 0.08);
    }
    
    .main-navbar .navbar-nav .nav-item:last-child {
        border-bottom: none;
    }
    
    .main-navbar .navbar-nav .nav-link {
        padding: 0.85rem 1rem;
        font-size: 1rem;
    }
    
    /* Tablet/mobile dropdown - show inline, full width */
    .main-navbar .navbar-nav .dropdown-menu {
        position: static;
        float: none;
        width: 100%;
        margin: 0;
        padding: 0.25rem 0 0.5rem 1.5rem;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background-color: rgba(0, 0, 0, 0.03);
    }
    
    .main-navbar .navbar-nav .dropdown-item {
        padding: 0.5rem 1rem;
    }
    
    .menu-separator {
        display: none;
    }
}

@media (max-width: 991px) {
    .header-main {
        padding: 10px 0;
    }
    
    .header-main .navbar-brand img,
    .header-main .navbar-brand .header-logo {
        height: auto;
        min-height: 80px;
        max-height: 80px;
        width: auto;
        object-fit: contain;
    }
    
    .header-info {
        display: none !important;
    }
    
    .hero-caption {
        padding: 1.5rem;
    }
    
    .hero-caption h3,
    .hero-caption-text h3,
    .hero-caption h2,
    .hero-caption-text h2 {
        font-size: 1.75rem;
    }
    
    .section-padding {
        padding: 40px 0;
    }
    
    /* Topbar mobile - centered links */
    .topbar .topbar-links {
        justify-content: center !important;
        width: 100%;
    }
    
    .topbar .container-fluid {
        display: flex;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .hero-slider .carousel-item {
        min-height: 400px;
    }
    
    .hero-caption h3,
    .hero-caption-text h3,
    .hero-caption h2,
    .hero-caption-text h2 {
        font-size: 1.5rem;
    }
    
    .hero-caption p,
    .hero-caption-text p {
        font-size: 0.95rem;
    }
    
    .welcome-section h1 {
        font-size: 2rem;
    }
    
    .co-chair-img {
        width: 80px;
        height: 80px;
    }
}

/* Utility Classes */
.text-theme {
    color: var(--theme-color) !important;
}

.bg-header {
    background-color: var(--header-bg) !important;
}

.bg-footer {
    background-color: var(--footer-bg) !important;
}

.bg-socket {
    background-color: var(--socket-bg) !important;
}

/* Homepage & Page Content Wrapper - Full width like HTML code blocks */
.homepage-content-wrapper,
.page-content-wrapper {
    background-color: #ffffff;
    min-height: 400px;
}

.homepage-content-wrapper .page-blocks,
.page-content-wrapper .page-blocks {
    max-width: 100%;
}

.homepage-content-wrapper .page-block,
.page-content-wrapper .page-block {
    width: 100%;
}

/* Responsive adjustments for homepage content */
@media (max-width: 991px) {
    .homepage-content-wrapper {
        padding: 2rem 0 !important;
    }
    
    .homepage-content-wrapper .container,
    .page-content-wrapper .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}