/* Hackathon Page Styles */

/* Header Styles */
.hackathon-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 10px 0;
    position: relative;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    height: 60px;
}

.hackathon-header nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.hackathon-header .logo img {
    height: 35px;
    width: auto;
}

.back-btn {
    color: white;
    text-decoration: none;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

/* Event Info Banner - Enhanced Full Screen Layout */
.event-info-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px 20px;
    height: calc(100vh - 60px);
    overflow-y: auto;
    position: relative;
}


.event-content {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    z-index: 1;
    padding: 20px 0;
}

.event-header {
    text-align: center;
}

.event-header h1 {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 10px;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -1px;
}

.event-header h1 i {
    color: #ffd700;
    font-size: 2.5rem;
    filter: drop-shadow(0 2px 10px rgba(255, 215, 0, 0.4));
}

.event-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffd700;
    margin: 0 0 20px 0;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Enhanced Side by side schedule layout */
.event-schedule {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin: 15px 0;
    margin-left: auto;
    margin-right: auto;
}

.schedule-day {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border-top: 4px solid #667eea;
    transition: all 0.4s ease;
    height: fit-content;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    width: 500px;
    max-width: 500px;
}

.schedule-day:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.2);
}

.schedule-day:nth-child(2) {
    border-top-color: #ffd700;
}

.schedule-day:nth-child(2)::before {
    background: linear-gradient(45deg, transparent, rgba(255, 215, 0, 0.05), transparent);
}

.day-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    position: relative;
    z-index: 2;
}

.day-header i {
    color: #667eea;
    font-size: 1.5rem;
    padding: 10px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.schedule-day:nth-child(2) .day-header i {
    color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
}

.schedule-day:hover .day-header i {
    transform: scale(1.1) rotate(5deg);
}

.day-header h3 {
    font-size: 1.3rem;
    font-weight: 800;
    color: #333;
    margin: 0;
    letter-spacing: -0.5px;
}

.day-info {
    position: relative;
    z-index: 2;
}

.day-info p {
    margin: 8px 0;
    color: #555;
    font-size: 1rem;
    line-height: 1.4;
    font-weight: 500;
}

.day-info strong {
    color: #333;
    font-weight: 700;
    font-size: 1rem;
}

/* Enhanced Event highlights with venue */
.event-highlights {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px 20px;
    border-radius: 40px;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.4s ease;
    backdrop-filter: blur(15px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.highlight:hover::before {
    left: 100%;
}

.highlight:hover {
    transform: translateY(-5px) scale(1.05);
    background: rgba(255, 255, 255, 0.3);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.highlight:nth-child(1) {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.9) 0%, rgba(255, 193, 7, 0.9) 100%);
    border-color: rgba(255, 215, 0, 0.5);
}

.highlight:nth-child(2) {
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.9) 0%, rgba(39, 174, 96, 0.9) 100%);
    border-color: rgba(46, 204, 113, 0.5);
}

.highlight:nth-child(3) {
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.9) 0%, rgba(142, 68, 173, 0.9) 100%);
    border-color: rgba(155, 89, 182, 0.5);
}

.highlight i {
    font-size: 1.2rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Registration CTA Button */
.cta-section {
    text-align: center;
    margin-top: 20px;
}

.register-cta {
    background: linear-gradient(135deg, #fe6565 0%, #fd8989 50%, #fc9f9f 100%);
    color: white;
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 800;
    border-radius: 40px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 
        0 15px 35px rgba(255, 107, 107, 0.4),
        0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    border: 4px solid rgb(12, 12, 12,0.6);
}

.register-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.register-cta:hover::before {
    left: 100%;
}

.register-cta:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 
        0 25px 50px rgba(255, 107, 107, 0.6),
        0 10px 30px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg, #ff5252 0%, #ff7979 50%, #fd79a8 100%);
}

.register-cta:active {
    transform: translateY(-2px) scale(1.02);
    transition: all 0.1s ease;
}

.register-cta i {
    font-size: 1.2rem;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.3));
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.day-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.day-header i {
    color: #667eea;
    font-size: 1.5rem;
}

.schedule-day:nth-child(2) .day-header i {
    color: #ffd700;
}

.day-header h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: #333;
    margin: 0;
}

.day-info p {
    margin: 8px 0;
    color: #666;
    font-size: 1rem;
}

.day-info strong {
    color: #333;
    font-weight: 600;
}

.event-highlights {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: 600;
    transition: transform 0.3s ease;
}

.highlight:hover {
    transform: translateY(-2px);
}

.highlight i {
    font-size: 1.1rem;
}

/* Enhanced Registration Section */
.registration-section {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 40px 20px;
    position: relative;
}

.registration-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="dots" width="10" height="10" patternUnits="userSpaceOnUse"><circle cx="5" cy="5" r="1" fill="rgba(102,126,234,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
    pointer-events: none;
}

.registration-container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: 25px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.registration-container::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    z-index: 1;
}

.registration-container::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(255, 193, 7, 0.05) 100%);
    z-index: 1;
}

.form-header {
    text-align: center;
    padding: 30px 40px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    z-index: 2;
    overflow: hidden;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.form-header h2 {
    font-size: 2.2rem;
    font-weight: 900;
    margin-bottom: 10px;
    text-align: center;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    letter-spacing: -1px;
}

.form-header h2 i {
    color: #ffd700;
    filter: drop-shadow(0 3px 10px rgba(255, 215, 0, 0.4));
    font-size: 2rem;
}

.form-subtitle {
    font-size: 1.2rem;
    opacity: 0.95;
    margin: 0;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.form-container {
    padding: 30px 40px;
    position: relative;
    z-index: 2;
    max-width: 700px;
    width: 650px; /* Specific width for hackathon registration */
    margin: 0 auto;
}

/* Specific class for hackathon registration form */
.hackathon-form-container {
    padding: 30px 40px;
    position: relative;
    z-index: 2;
    max-width: 700px;
    width: 650px;
    margin: 0 auto;
}

/* Form Styles */
.hackathon-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-row {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 5px;
}

.form-row .form-group {
    flex: 1;
}

.form-row .form-group.full-width {
    width: 100%;
}

/* Enhanced Form Groups */
.form-group {
    position: relative;
    margin-bottom: 15px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 1rem;
    letter-spacing: 0.3px;
    position: relative;
    padding-left: 20px;
}

.form-group label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.form-group label i {
    color: #667eea;
    width: 18px;
    font-size: 1.1rem;
    filter: drop-shadow(0 2px 4px rgba(102, 126, 234, 0.2));
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 18px;
    border: 2px solid #e8ecf4;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: rgba(248, 249, 250, 0.7);
    backdrop-filter: blur(10px);
    box-sizing: border-box;
    font-family: 'Segoe UI', system-ui, sans-serif;
    font-weight: 500;
    color: #2c3e50;
    position: relative;
    z-index: 1;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #94a3b8;
    font-weight: 400;
    opacity: 0.8;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 
        0 0 0 4px rgba(102, 126, 234, 0.15),
        0 8px 25px rgba(102, 126, 234, 0.1);
    background: white;
    transform: translateY(-2px);
}

.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
    border-color: #cbd5e1;
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.form-group input.valid,
.form-group select.valid,
.form-group textarea.valid {
    border-color: #10b981;
    background: rgba(240, 253, 244, 0.8);
    position: relative;
}

.form-group input.invalid,
.form-group select.invalid,
.form-group textarea.invalid {
    border-color: #ef4444;
    background: rgba(254, 242, 242, 0.8);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Phone Input Container */
.phone-input-container {
    display: flex;
    position: relative;
}

.country-code-dropdown {
    position: relative;
}

.selected-code {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 15px 12px;
    border: 2px solid #e8ecf4;
    border-right: none;
    border-radius: 12px 0 0 12px;
    background: rgba(248, 249, 250, 0.7);
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 90px;
    justify-content: center;
    height: 49px;
    box-sizing: border-box;
}

.selected-code:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: #cbd5e1;
}

.selected-code img {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

.selected-code i {
    font-size: 0.8rem;
    color: #666;
}

.country-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 2px solid #e8ecf4;
    border-top: none;
    border-radius: 0 0 12px 12px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.country-dropdown.active {
    display: block;
}

.country-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.country-option:hover {
    background: #f8f9fa;
}

.country-option img {
    width: 20px;
    height: 15px;
    object-fit: cover;
    border-radius: 2px;
}

.phone-input-container input {
    border-radius: 0 12px 12px 0;
    border-left: none;
    flex: 1;
    height: 49px;
    box-sizing: border-box;
}

/* Error Messages */
.error-message {
    color: #ef4444;
    font-size: 0.85rem;
    margin-top: 5px;
    margin-bottom: 0;
    display: none;
    align-items: center;
    gap: 5px;
}

.error-message.show {
    display: flex;
}

.error-message:before {
    content: '⚠';
    font-weight: bold;
}

/* Enhanced Submit Button */
.submit-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 70%, #ff6b6b 100%);
    color: white;
    padding: 18px 40px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-top: 15px;
    box-shadow: 
        0 15px 35px rgba(102, 126, 234, 0.3),
        0 5px 15px rgba(0, 0, 0, 0.12);
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 
        0 25px 50px rgba(102, 126, 234, 0.4),
        0 10px 30px rgba(255, 107, 107, 0.2),
        0 0 20px rgba(118, 75, 162, 0.3);
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 70%, #ff6b6b 100%);
}

.submit-btn:active {
    transform: translateY(-1px) scale(1.01);
    transition: all 0.1s ease;
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.submit-btn:disabled:hover {
    transform: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 70%, #ff6b6b 100%);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.submit-btn i {
    font-size: 1.3rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

/* Loading state for submit button */
.submit-btn.loading {
    pointer-events: none;
    position: relative;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Form Response */
.form-response {
    margin-top: 20px;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    display: none;
}

.form-response.success {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.form-response.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.form-response.loading {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    border: 1px solid rgba(102, 126, 234, 0.3);
}

/* Feature Disabled Message Styles */
.feature-disabled-message {
    min-height: 80vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.feature-disabled-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* Mobile Full Screen Layout - Two Screen Design */
@media (max-width: 768px) {
    /* Reset body and html for full screen mobile experience */
    html, body {
        margin: 0;
        padding: 0;
        height: 100%;
        overflow-x: hidden;
    }

    /* Mobile Header - Reduced Height */
    .hackathon-header {
        height: 50px;
        padding: 5px 0;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1001;
    }

    .hackathon-header .logo img {
        height: 30px;
    }

    /* First Full Screen - Event Info Banner */
    .event-info-banner {
        height: 100vh;
        min-height: 100vh;
        padding: 50px 15px 0;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
        overflow: hidden;
    }

    .event-content {
        height: auto;
        max-height: calc(100vh - 50px);
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        padding: 20px 0;
        overflow-y: auto;
    }

    /* Event Header Mobile */
    .event-header h1 {
        font-size: 2.2rem;
        line-height: 1.1;
        margin-bottom: 10px;
        flex-direction: column;
        gap: 10px;
    }

    .event-header h1 i {
        font-size: 2rem;
    }

    .event-subtitle {
        font-size: 1rem;
        margin-bottom: 20px;
        letter-spacing: 1px;
    }

    /* Schedule Cards - Stacked Vertically */
    .event-schedule {
        flex-direction: column;
        gap: 15px;
        margin: 20px 0;
        padding: 0 10px;
    }

    .schedule-day {
        width: 100%;
        max-width: 100%;
        padding: 15px;
        transform: none;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }

    .schedule-day:hover {
        transform: translateY(-2px);
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    }

    .day-header h3 {
        font-size: 1.1rem;
        margin-bottom: 8px;
    }

    .day-header i {
        font-size: 1.2rem;
        padding: 8px;
    }

    .day-info p {
        font-size: 0.9rem;
        margin: 6px 0;
    }

    /* Event Highlights - Mobile Stack */
    .event-highlights {
        flex-direction: column;
        gap: 12px;
        margin: 20px 0;
        padding: 0 10px;
    }

    .highlight {
        padding: 12px 15px;
        font-size: 0.9rem;
        border-radius: 25px;
        justify-content: center;
    }

    .highlight i {
        font-size: 1.1rem;
    }

    /* CTA Button - Mobile */
    .register-cta {
        padding: 12px 25px;
        font-size: 0.95rem;
        margin-top: 20px;
        width: auto;
        max-width: 250px;
        border-radius: 25px;
    }

    .register-cta:hover {
        transform: translateY(-2px) scale(1.02);
    }

    @keyframes bounce {
        0%, 20%, 50%, 80%, 100% {
            transform: translateX(-50%) rotate(-45deg) translateY(0);
        }
        40% {
            transform: translateX(-50%) rotate(-45deg) translateY(-10px);
        }
        60% {
            transform: translateX(-50%) rotate(-45deg) translateY(-5px);
        }
    }

    /* Second Full Screen - Registration Section */
    .registration-section {
        min-height: 100vh;
        height: auto;
        padding: 60px 15px 30px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    }

    .registration-container {
        width: 100%;
        max-width: 100%;
        margin: 0;
        border-radius: 0;
        box-shadow: none;
        background: transparent;
        overflow: visible;
    }

    .registration-container::before,
    .registration-container::after {
        display: none;
    }

    /* Form Header Mobile */
    .form-header {
        padding: 20px 15px;
        margin: 0 -15px 20px;
        border-radius: 0;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }

    .form-header h2 {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }

    .form-header h2 i {
        font-size: 1.6rem;
    }

    .form-subtitle {
        font-size: 1rem;
    }

    /* Form Container Mobile */
    .hackathon-form-container {
        width: 100%;
        max-width: 100%;
        padding: 0;
        margin: 0;
        background: white;
        border-radius: 15px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        padding: 20px 15px;
    }

    /* Form Rows Mobile - Single Column */
    .form-row {
        flex-direction: column;
        gap: 0;
        margin-bottom: 5px;
    }

    .form-group {
        margin-bottom: 20px;
        width: 100%;
    }

    .form-group.full-width {
        width: 100%;
    }

    /* Form Labels Mobile */
    .form-group label {
        font-size: 0.9rem;
        padding-left: 12px;
        margin-bottom: 8px;
    }

    .form-group label::before {
        width: 3px;
        height: 16px;
    }

    .form-group label i {
        font-size: 1rem;
        width: 16px;
    }

    /* Form Inputs Mobile */
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 15px;
        font-size: 16px; /* Prevent zoom on iOS */
        border-radius: 8px;
        border: 2px solid #e8ecf4;
        background: white;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        border-color: #667eea;
        box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        transform: none;
    }

    /* Phone Input Mobile */
    .phone-input-container {
        flex-direction: row;
        gap: 0;
    }

    .selected-code {
        min-width: 80px;
        padding: 12px 10px;
        font-size: 14px;
        height: auto;
    }

    .selected-code img {
        width: 18px;
        height: 12px;
    }

    .phone-input-container input {
        font-size: 16px;
        padding: 12px 15px;
        height: auto;
    }

    /* Country Dropdown Mobile */
    .country-dropdown {
        max-height: 180px;
        border-radius: 0 0 8px 8px;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
        -webkit-overflow-scrolling: touch;
    }

    .country-option {
        padding: 12px 15px;
        font-size: 14px;
    }

    .country-option img {
        width: 18px;
        height: 12px;
    }

    /* Submit Button Mobile */
    .submit-btn {
        padding: 15px 20px;
        font-size: 1rem;
        border-radius: 8px;
        margin-top: 20px;
        width: 100%;
        box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    }

    .submit-btn:hover {
        transform: translateY(-1px);
        box-shadow: 0 12px 25px rgba(102, 126, 234, 0.4);
    }

    .submit-btn i {
        font-size: 1.1rem;
    }

    /* Error Messages Mobile */
    .error-message {
        font-size: 0.8rem;
        margin-top: 5px;
        padding-left: 12px;
    }

    /* Form Response Mobile */
    .form-response {
        margin-top: 15px;
        padding: 15px;
        border-radius: 8px;
        font-size: 0.9rem;
    }

    /* Footer Mobile - If exists */
    .footer {
        padding: 30px 15px 20px;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .footer-bottom {
        padding: 15px;
        font-size: 0.85rem;
    }
}

/* Small Mobile Screens - Extra Adjustments */
@media (max-width: 480px) {
    .event-header h1 {
        font-size: 1.9rem;
    }

    .event-subtitle {
        font-size: 0.9rem;
    }

    .schedule-day {
        padding: 12px;
    }

    .day-header h3 {
        font-size: 1rem;
    }

    .day-info p {
        font-size: 0.85rem;
    }

    .form-header h2 {
        font-size: 1.6rem;
    }

    .hackathon-form-container {
        padding: 15px 12px;
    }

    .form-group input,
    .form-group select {
        padding: 10px 12px;
    }

    .register-cta {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* Very Small Screens */
@media (max-width: 360px) {
    .event-header h1 {
        font-size: 1.7rem;
    }

    .hackathon-form-container {
        padding: 12px 10px;
    }

    .form-header {
        padding: 15px 10px;
    }

    .schedule-day {
        padding: 10px;
    }
}