:root {
    --primary-blue: #123a68;
    --secondary-orange: #f3a72f;
    --corporate-teal: #0f8b8d;
    --corporate-indigo: #244c9a;
    --medical-bg: #edf5fb;
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-dark: #172033;
    --text-light: #64748b;
    --border-color: #d8e1ec;
    --success-green: #28a745;
    --earlyBird-bg: #eaf4ff;
    --earlyBird-text: #143f6b;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background:
        radial-gradient(circle at 9% 5%, rgba(15, 139, 141, 0.18), transparent 30%),
        radial-gradient(circle at 91% 2%, rgba(243, 167, 47, 0.16), transparent 28%),
        linear-gradient(180deg, #f9fcff 0%, var(--medical-bg) 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.event-header {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 16px 35px rgba(18, 58, 104, 0.12);
    margin-bottom: 30px;
}

.banner-img {
    width: 100%;
    height: auto;
    display: block;
}

.header-content {
    padding: 24px 25px 28px;
    text-align: center;
    border-top: 4px solid var(--corporate-teal);
}

.header-content h1 {
    color: var(--primary-blue);
    font-size: 2.15rem;
    font-weight: 800;
    margin-bottom: 5px;
}

.header-content h2 {
    color: var(--secondary-orange);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.event-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.event-details span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.event-details a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

/* Form Styles */
.registration-form-container {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 34px;
    box-shadow: 0 18px 40px rgba(18, 58, 104, 0.1);
}

.form-hero {
    background: linear-gradient(135deg, rgba(18, 58, 104, 0.96) 0%, rgba(36, 76, 154, 0.94) 50%, rgba(15, 139, 141, 0.96) 100%);
    color: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 32px;
    box-shadow: inset 0 -4px 0 rgba(243, 167, 47, 0.85);
}

.form-hero h2 {
    font-size: 1.9rem;
    line-height: 1.2;
    margin-bottom: 8px;
}

.form-hero p {
    color: rgba(255, 255, 255, 0.86);
    max-width: 720px;
}

.event-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.event-chip-row span {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    padding: 8px 13px;
    color: white;
    font-size: 0.9rem;
}

.form-section {
    margin-bottom: 34px;
    padding-bottom: 30px;
    border-bottom: 1px solid #edf2f7;
}

.form-section:last-of-type {
    border-bottom: 0;
    padding-bottom: 0;
}

.section-title {
    color: var(--primary-blue);
    border-left: 4px solid var(--corporate-teal);
    padding-left: 15px;
    margin-bottom: 25px;
    font-size: 1.3rem;
}

.section-help {
    color: var(--text-light);
    margin: -10px 0 18px;
}

.required {
    color: #d93025;
    font-weight: 800;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
}

input,
select {
    padding: 13px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    background: #fbfdff;
    transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(15, 139, 141, 0.12);
    background: white;
}

.highlight-section {
    background: linear-gradient(135deg, #f7fbff 0%, #eef9f7 100%);
    border: 1px solid #d4e8ef;
    border-radius: 10px;
    padding: 24px;
}

.choice-card-group {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.choice-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-height: 112px;
    padding: 18px 18px 18px 52px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: white;
    cursor: pointer;
    transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}

.choice-card:hover {
    border-color: var(--primary-blue);
    box-shadow: 0 10px 20px rgba(18, 58, 104, 0.08);
    transform: translateY(-1px);
}

.choice-card input {
    position: absolute;
    left: 18px;
    top: 22px;
    width: 18px;
    height: 18px;
    accent-color: var(--corporate-teal);
}

.choice-card:has(input:checked) {
    border-color: var(--corporate-teal);
    background: #eefaf8;
    box-shadow: 0 10px 24px rgba(15, 139, 141, 0.1);
}

.choice-title {
    color: var(--primary-blue);
    font-size: 1.08rem;
    font-weight: 800;
}

.choice-copy {
    color: var(--text-light);
    font-size: 0.92rem;
}

/* Category Selection */
.pricing-note {
    background: var(--earlyBird-bg);
    color: var(--earlyBird-text);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    border-left: 4px solid #1890ff;
}

.late-fee {
    display: block;
    margin-top: 5px;
    font-weight: 600;
    color: #e53935;
}

.category-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.category-card {
    position: relative;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 18px;
    cursor: pointer;
    transition: all 0.3s;
    display: block;
    background: #fbfdff;
}

.category-card:hover {
    border-color: var(--primary-blue);
    background: rgba(0, 74, 153, 0.02);
}

.category-card input {
    position: absolute;
    opacity: 0;
}

.category-card input:checked+.card-content {
    color: var(--primary-blue);
}

.category-card:has(input:checked) {
    border-color: var(--primary-blue);
    background: rgba(0, 74, 153, 0.05);
}

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

.category-label {
    font-weight: 600;
}

.price {
    font-weight: 700;
    color: var(--secondary-orange);
    font-size: 1.1rem;
}

/* Payment & Fee */
.fee-summary-box {
    background: linear-gradient(135deg, var(--primary-blue), var(--corporate-indigo), var(--corporate-teal));
    color: white;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 25px;
}

.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.2rem;
    font-weight: 700;
}

.coupon-section {
    margin-bottom: 30px;
}

.promo-label {
    color: #e53935;
    font-weight: 800 !important;
    font-size: 1.1rem !important;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 5px;
    animation: promoPulse 2s infinite;
}

@keyframes promoPulse {
    0% {
        opacity: 0.9;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.02);
        color: #ff5252;
    }

    100% {
        opacity: 0.9;
        transform: scale(1);
    }
}

.coupon-input-group {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.coupon-input-group input {
    flex: 1;
}

.coupon-input-group button {
    padding: 0 20px;
    background: var(--text-dark);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

.coupon-msg {
    font-size: 0.85rem;
    margin-top: 5px;
}

.coupon-msg.success {
    color: var(--success-green);
}

.coupon-msg.error {
    color: #e53935;
}

.payment-area {
    background: #f8fbff;
    border: 1px dashed var(--border-color);
    padding: 25px;
    border-radius: 12px;
}

.qr-container {
    text-align: center;
    margin-bottom: 25px;
}

.qr-instr {
    margin-bottom: 15px;
    font-weight: 600;
}

.qr-code {
    max-width: 200px;
    border: 2px solid white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.upi-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upi-id {
    background: #e3f2fd;
    color: var(--primary-blue);
    padding: 8px 15px;
    border-radius: 6px;
    font-size: 0.95rem;
    border: 1px solid #bbdefb;
}

.upi-pay-btn {
    display: inline-block;
    background: var(--success-green);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: transform 0.2s, background 0.3s;
    box-shadow: 0 4px 10px rgba(40, 167, 69, 0.2);
}

.upi-pay-btn:hover {
    transform: translateY(-2px);
    background: #218838;
}

.payment-note {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 15px;
    font-style: italic;
}

/* Submit Footer */
.form-actions {
    margin-top: 40px;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-blue), var(--corporate-indigo), var(--corporate-teal));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #003a7a;
}

/* Overlay & Modal */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal {
    background: white;
    padding: 40px;
    border-radius: 20px;
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.hidden {
    display: none !important;
}

.success-icon {
    font-size: 4rem;
    color: var(--success-green);
    margin-bottom: 20px;
}

.success-details {
    margin: 20px 0;
}

.reg-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin: 10px 0;
    letter-spacing: 2px;
}

.close-btn {
    padding: 12px 30px;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
}

/* Admin Styles */
.admin-footer {
    margin-top: 50px;
    text-align: center;
}

.admin-btn {
    background: none;
    border: none;
    color: #ccc;
    cursor: pointer;
    font-size: 0.8rem;
}

.admin-panel {
    margin-top: 15px;
    padding: 15px;
    background: #eee;
    border-radius: 8px;
}

#downloadCsvBtn {
    padding: 8px 15px;
    background: #444;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Adjustments */
@media (max-width: 900px) {
    .form-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .choice-card-group {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    body {
        background: linear-gradient(180deg, #f9fcff 0%, #eef5fb 100%);
    }

    .container {
        width: 100%;
        padding: 0;
    }

    .event-header {
        border-radius: 0;
        box-shadow: none;
        margin-bottom: 0;
    }

    .header-content {
        padding: 18px 16px 20px;
        border-top-width: 3px;
    }

    .header-content h1 {
        font-size: 1.5rem;
    }

    .header-content h2 {
        font-size: 1rem;
    }

    .registration-form-container {
        border-radius: 0;
        padding: 16px;
        box-shadow: none;
    }

    .form-hero {
        padding: 22px 18px;
        border-radius: 8px;
        margin-bottom: 24px;
    }

    .form-hero h2 {
        font-size: 1.55rem;
    }

    .form-hero p {
        font-size: 0.96rem;
    }

    .event-chip-row {
        gap: 8px;
    }

    .event-chip-row span {
        width: 100%;
        border-radius: 8px;
        padding: 9px 11px;
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .form-section {
        margin-bottom: 28px;
        padding-bottom: 26px;
    }

    .highlight-section,
    .payment-area,
    .category-card,
    .choice-card {
        border-width: 1px;
        border-radius: 8px;
    }

    .highlight-section,
    .payment-area {
        padding: 18px;
    }

    .card-content {
        gap: 12px;
        align-items: flex-start;
        flex-direction: column;
    }

    .coupon-input-group {
        flex-direction: column;
    }

    .coupon-input-group button {
        min-height: 48px;
    }
}