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

:root {
    --primary-red: #c1121f;
    --dark-green: #18392b;
    --gold: #c89b3c;
    --cream: #f7f4ee;
    --light: #fbf9f5;
    --border: #eae4d8;
    --text: #1e1e1e;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", sans-serif;
    background: linear-gradient(to bottom, #f8f5ef, #f2ece2);
    color: var(--text);
    overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 {
    font-family: "Playfair Display", serif;
}

.container {
    width: 100%;
    max-width: 1180px;
    margin: auto;
    padding: 0 20px;
}

/* HEADER */

header {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    background: rgba(255,255,255,0.50);
    backdrop-filter: blur(12px);
}

.header-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
}

.logo img {
    height: 85px;
}

.nav-menu{ 
    display:flex;
    align-items:center;
    gap:24px;
    background:transparent;
    border:none;
    border-radius:0;
    padding:0;
    box-shadow:none;
} 

.nav-menu a{
    text-decoration:none;

    color:var(--text);

    font-size:15px;
    font-weight:600;

    transition:0.3s ease;

    white-space:nowrap;
}

.nav-menu a:hover{
    color:var(--primary-red);
}


.register-btn {
    color: #fff;
    text-decoration: none;
    padding: 12px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 700;
    transition: 0.3s;
}

/* HERO */

.hero {
    min-height: 620px;
    background: url("./images/banner.png") no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-inner {
    padding: 120px 20px 90px;
}

.hero-top {
    color: var(--gold);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.hero-top span {
    display: block;
    color: var(--dark-green);
    font-size: 58px;
    margin-top: 8px;
}

.hero-b2b {
    color: var(--dark-green);
    margin-bottom: 26px;
    font-size: 20px;
}

.hero-title {
    font-size: 92px;
    line-height: 1;
    margin-bottom: 20px;
}

.hero-title .orange {
    color: var(--gold);
}

.hero-title .red {
    color: var(--primary-red);
}

.hero-subtitle {
    color: var(--dark-green);
    font-size: 34px;
    letter-spacing: 2px;
    margin-bottom: 18px;
}

.hero-tagline {
    color: var(--dark-green);
    font-size: 20px;
}

/* REGISTRATION */

.registration-section {
    padding: 90px 0;
    margin-top: -90px;
    position: relative;
    z-index: 10;
}

.registration-box {
    background: #fff;
    border-radius: 30px;
    padding: 55px;
    box-shadow: var(--shadow);
}

.section-badge {
    width: max-content;
    margin: auto;
    margin-bottom: 18px;
    padding: 10px 18px;
    border-radius: 50px;
    background: rgba(193,18,31,0.08);
    color: var(--primary-red);
    font-size: 12px;
    font-weight: 700;
}

.section-title {
    text-align: center;
    font-size: 48px;
    color: var(--dark-green);
    margin-bottom: 15px;
}

.section-description {
    max-width: 760px;
    margin: auto;
    text-align: center;
    color: #666;
    line-height: 1.8;
    margin-bottom: 45px;
}

/* FORM */

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark-green);
    margin-bottom: 10px;
}

.form-group input,
.form-group select {
    width: 100%;
    height: 58px;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 0 18px;
    font-size: 15px;
    outline: none;
}

/* PHONE FIELD */

.phone-wrapper {
    display: flex;
    gap: 10px;
}

.phone-code {
    width: 120px !important;
}

/* PARTICIPANT / VISITOR */

.top-form-row {
    margin-top: 40px;
}

.register-type {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.register-type label {
    border: 2px solid var(--border);
    border-radius: 18px;
    padding: 24px;
    cursor: pointer;
}

/* OPTION */

.option-section {
    margin-top: 50px;
}

.option-title {
    font-size: 34px;
    color: var(--dark-green);
    margin-bottom: 10px;
}

.option-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.option-card {
    border: 1px solid #ebe5d8;
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
}

.option-card input {
    display: none;
}

.option-card-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 16px 20px;
}

.option-price {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary-red);
}

/* TOTAL */

.price-summary {
    margin-top: 45px;
    background: linear-gradient(135deg,#faf4eb,#f3ebdf);
    border-radius: 22px;
    padding: 34px;
    text-align: center;
}

.price-summary h2 {
    font-size: 42px;
}

/* BUTTON */

.submit-btn {
    width: 100%;
    height: 66px;
    border: none;
    border-radius: 18px;
    margin-top: 45px;
    background: linear-gradient(135deg,var(--primary-red),#99111c);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
}

/* MOBILE */

@media(max-width:768px){

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

    .register-type {
        grid-template-columns: 1fr;
    }

    .phone-wrapper {
        flex-direction: column;
    }

    .phone-code {
        width: 100% !important;
    }
}

/* =========================================
   REFERRAL BOX
========================================= */

.referral-box {

    display: none;

    margin-top: 20px;
}

.referral-box input {

    width: 100%;

    height: 58px;

    border: 1px solid var(--border);

    border-radius: 14px;

    padding: 0 18px;

    font-size: 15px;

    outline: none;
}

/* =========================================
   DESIGN ENHANCEMENT
========================================= */

.register-btn {

    background:
    linear-gradient(
        135deg,
        var(--primary-red),
        #99111c
    );

    box-shadow:
    0 10px 25px rgba(193,18,31,0.20);
}

.register-btn:hover {

    transform: translateY(-2px);
}

.option-card {

    transition: 0.3s ease;
}

.option-card:hover {

    transform: translateY(-2px);

    border-color: var(--primary-red);

    box-shadow:
    0 10px 30px rgba(0,0,0,0.06);
}

.option-card input:checked
+ .option-card-content {

    background:
    rgba(193,18,31,0.04);

    border-left:
    5px solid var(--primary-red);
}

.form-group input:focus,
.form-group select:focus {

    border-color: var(--primary-red);

    box-shadow:
    0 0 0 4px rgba(193,18,31,0.08);
}

.source-options {

    display: flex;

    flex-wrap: wrap;

    gap: 15px;

    margin-top: 20px;
}

.source-options label {

    border: 1px solid var(--border);

    padding: 14px 18px;

    border-radius: 12px;

    cursor: pointer;

    transition: 0.3s;

    background: #fff;
}

.source-options label:hover {

    border-color: var(--primary-red);

    background:
    rgba(193,18,31,0.03);
}

.referral-box input{
    padding: 10px;
}

.submit-btn {

    transition: 0.3s;
}

.submit-btn:hover {

    transform: translateY(-3px);

    box-shadow:
    0 18px 40px rgba(193,18,31,0.30);
}

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

.menu-toggle {
    display: none;
    font-size: 32px;
    cursor: pointer;
    color: var(--dark-green);
}

/* Desktop */
.desktop-register {
    display: inline-flex;
}

.mobile-register {
    display: none;
}

/* Tablet & Mobile */
@media (max-width: 991px) {

    header {
        background: rgba(255,255,255,0.95);
    }

    .header-wrapper {
        padding: 14px 0;
        position: relative;
    }

    .logo img {
        height: 65px;
    }

    .menu-toggle {
        display: block;
    }

    .desktop-register {
        display: none;
    }

    .mobile-register {
        display: inline-flex;
        justify-content: center;
        margin-top: 20px;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;

        background: #fff;

        flex-direction: column;
        align-items: flex-start;

        gap: 0;
        padding: 0;

        border-radius: 0 0 20px 20px;
        box-shadow: 0 15px 40px rgba(0,0,0,0.08);

        max-height: 0;
        overflow: hidden;

        transition: 0.35s ease;
    }

    .nav-menu.active {
        max-height: 700px;
        padding: 20px;
    }

    .nav-menu a {
        width: 100%;
        padding: 16px 0;
        border-bottom: 1px solid #eee;
        font-size: 16px;
    }

    .nav-menu a:last-child {
        border-bottom: none;
    }
}

/* Small Mobile */
@media (max-width: 576px) {

    .logo img {
        height: 55px;
    }

    .menu-toggle {
        font-size: 28px;
    }
}
/* =========================================
   HERO MOBILE RESPONSIVE
========================================= */

@media (max-width: 991px) {

    .hero {
        min-height: 520px;
        padding: 40px 20px;
        background-position: center;
    }

    .hero-inner {
        padding: 120px 15px 60px;
    }

    .hero-top {
        font-size: 16px;
        letter-spacing: 1px;
    }

    .hero-top span {
        font-size: 40px;
    }

    .hero-b2b {
        font-size: 16px;
        margin-bottom: 18px;
    }

    .hero-title {
        font-size: 58px;
        line-height: 1.1;
        margin-bottom: 15px;
    }

    .hero-subtitle {
        font-size: 24px;
        letter-spacing: 1px;
    }

    .hero-tagline {
        font-size: 16px;
        line-height: 1.6;
        padding: 0 10px;
    }
    .header-actions{
        gap:6px;
    }
    
    .linkedin-icon{
    
        width:38px;
        height:38px;
    
        font-size:18px;
    }
}

@media (max-width: 576px) {

    .hero {
        min-height: 460px;
    }

    .hero-inner {
        padding-top: 100px;
    }

    .hero-top {
        font-size: 14px;
    }

    .hero-top span {
        font-size: 30px;
    }

    .hero-b2b {
        font-size: 14px;
    }

    .hero-title {
        font-size: 38px;
        line-height: 1.15;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-tagline {
        font-size: 14px;
    }
}

.header-actions{

    display:flex;
    align-items:center;
    gap:8px;
}

.linkedin-icon{

    width:42px;
    height:42px;

    display:flex;
    align-items:center;
    justify-content:center;

    border-radius:50%;

    background:#0077B5;
    color: #fff;

    text-decoration:none;

    font-size:20px;

    transition:0.3s;
}

.linkedin-icon:hover{

    transform:scale(1.08);
}

/* =========================================
   SOLD OUT OPTION
========================================= */

.sold-out-card {

    opacity: 0.55;

    cursor: not-allowed;

    pointer-events: none;

    background: #f8f8f8;
}

.sold-out-header {

    display: flex;

    align-items: center;

    gap: 10px;

    flex-wrap: wrap;
}

.sold-out-badge {

    background: #C1121F;

    color: #fff;

    font-size: 11px;

    font-weight: 700;

    padding: 5px 10px;

    border-radius: 30px;

    letter-spacing: 0.5px;
}