:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --accent: #4299e1;
    --accent-light: #63b3ed;
    --accent-dark: #3182ce;
    --border: rgba(66, 153, 225, 0.2);
    --shadow: rgba(0, 0, 0, 0.1);
    --countdown-bg: rgba(66, 153, 225, 0.1);
}

[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-card: rgba(45, 55, 72, 0.6);
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --accent: #63b3ed;
    --accent-light: #90cdf4;
    --accent-dark: #4299e1;
    --border: rgba(99, 179, 237, 0.3);
    --shadow: rgba(0, 0, 0, 0.3);
    --countdown-bg: rgba(99, 179, 237, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.main-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 30px;
    background: transparent;
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: none;
}


.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

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

.logo-link .logo {
    height: 40px;
    width: auto;
}

[data-theme="dark"] .logo-link .logo path[fill="#101921"] {
    fill: var(--text-primary);
}

.header-tabs {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    justify-content: center;
}

.tab-link {
    padding: 10px 20px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.tab-link:hover {
    color: var(--accent);
    background: var(--countdown-bg);
}

.tab-link.active {
    color: var(--accent);
    background: var(--countdown-bg);
}

.tab-link.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}

.tab-link[href="teams.html"] {
    font-weight: 900;
    font-size: 1rem;
    letter-spacing: 0.5px;
    border-left: 2px solid var(--border);
    padding-left: 22px;
    margin-left: 10px;
}

.orca-logo-container {
    display: flex;
    align-items: center;
}

.orca-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 30px 20px;
}


.subheadline {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.countdown-section {
    text-align: center;
    padding: 30px 25px;
    background: var(--countdown-bg);
    border-radius: 24px;
    border: 2px solid var(--border);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px var(--shadow);
    animation: red-flicker 3s ease-in-out infinite;
    position: relative;
}

.countdown-section::before {
    content: "";
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 24px;
    background: transparent;
    z-index: -1;
    animation: red-glow-flicker 2.5s ease-in-out infinite;
}

@keyframes red-flicker {
    0%, 100% {
        box-shadow: 0 8px 32px var(--shadow), 0 0 20px rgba(220, 20, 60, 0.03);
    }
    25% {
        box-shadow: 0 8px 32px var(--shadow), 0 0 25px rgba(220, 20, 60, 0.05);
    }
    50% {
        box-shadow: 0 8px 32px var(--shadow), 0 0 30px rgba(220, 20, 60, 0.07);
    }
    75% {
        box-shadow: 0 8px 32px var(--shadow), 0 0 25px rgba(220, 20, 60, 0.05);
    }
}

@keyframes red-glow-flicker {
    0%, 100% {
        box-shadow: 0 0 15px rgba(220, 20, 60, 0.05), 0 0 30px rgba(220, 20, 60, 0.03);
    }
    50% {
        box-shadow: 0 0 25px rgba(220, 20, 60, 0.08), 0 0 50px rgba(220, 20, 60, 0.04);
    }
}

.image-section {
    text-align: center;
    margin: 40px 0;
    width: 100%;
    overflow: hidden;
}

.image-section svg {
    width: 100%;
    height: auto;
    max-width: 100%;
    display: block;
}

.countdown-label {
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 25px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 90px;
    padding: 18px 15px;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: 20px;
    border: 2px solid var(--border);
    box-shadow: 0 4px 16px var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: item-red-flicker 2.8s ease-in-out infinite;
}

@keyframes item-red-flicker {
    0%, 100% {
        box-shadow: 0 4px 16px var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 10px rgba(220, 20, 60, 0.03);
    }
    50% {
        box-shadow: 0 4px 16px var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 0 15px rgba(220, 20, 60, 0.05);
    }
}

.countdown-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.countdown-item:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--accent);
    box-shadow: 0 8px 24px var(--shadow), 0 0 20px rgba(66, 153, 225, 0.2);
}

.countdown-item:hover::before {
    opacity: 1;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
    font-variant-numeric: tabular-nums;
    letter-spacing: -2px;
    text-shadow: 0 2px 8px rgba(66, 153, 225, 0.2);
}

.countdown-label-small {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    margin-top: 4px;
}

section {
    margin: 50px 0;
    padding: 30px;
    background: var(--bg-card);
    border-radius: 15px;
    border-left: 4px solid var(--accent);
    box-shadow: 0 4px 12px var(--shadow);
    transition: all 0.3s ease;
}

section:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--shadow);
}

section h3 {
    font-size: 1.6rem;
    color: var(--accent);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 700;
}

.briefing p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.category-item {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.category-item:hover {
    border-color: var(--accent);
    transform: translateX(5px);
}

.category-item strong {
    color: var(--accent);
    font-weight: 700;
}

.rules ul {
    list-style: none;
    padding-left: 0;
}

.rules li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
}

.rules li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.2rem;
}

.register-section {
    text-align: center;
    margin: 40px 0;
}

.rules-content {
    margin: 30px 0;
    max-width: 1000px;
}

.rules-header {
    text-align: center;
    margin-bottom: 35px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.rules-header h1 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.rules-intro {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    margin-bottom: 30px;
}

.rule-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 22px;
    border: 2px solid var(--border);
    box-shadow: 0 3px 12px var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.rule-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.rule-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px var(--shadow);
    border-color: var(--accent);
}

.rule-card:hover::before {
    transform: scaleX(1);
}

.rule-icon {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
    line-height: 1;
}

.rule-card h2 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.rule-card p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

.rule-card strong {
    color: var(--accent);
    font-weight: 700;
}

.challenge-card {
    display: flex;
    flex-direction: column;
}

.challenge-header {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.challenge-category {
    display: inline-block;
    padding: 4px 10px;
    background: var(--accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.challenge-vendor {
    display: inline-block;
    padding: 4px 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.challenge-card h2 {
    margin-top: 0;
    margin-bottom: 12px;
}

.intro-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border);
}

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

.calendar-month {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.calendar-year {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: -5px;
}

.calendar-dates {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 10px;
}

.calendar-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
    padding: 20px 25px;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border-radius: 16px;
    border: 2px solid var(--border);
    box-shadow: 0 4px 12px var(--shadow);
}

.date-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 5px;
}

.date-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.calendar-separator {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    margin: 0 5px;
}

.calendar-duration {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 15px;
    padding: 8px 20px;
    background: var(--countdown-bg);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.intro-date {
    font-size: 1.3rem;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.intro-content {
    max-width: 800px;
    margin: 0 auto;
}

.intro-lead {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 40px;
    text-align: center;
}

.intro-lead strong {
    color: var(--accent);
    font-weight: 700;
}

.intro-benefits {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 35px;
    border: 2px solid var(--border);
    box-shadow: 0 4px 16px var(--shadow);
    margin-bottom: 40px;
}

.intro-benefits p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.intro-benefits p:last-child {
    margin-bottom: 0;
}

.intro-benefits strong {
    color: var(--accent);
    font-weight: 700;
}

.intro-cta {
    text-align: center;
    margin-top: 40px;
}

.teams-table-container {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 30px;
    border: 2px solid var(--border);
    box-shadow: 0 4px 16px var(--shadow);
    overflow-x: auto;
    max-height: 600px;
    overflow-y: auto;
}

.teams-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
}

.teams-table thead {
    background: linear-gradient(135deg, var(--countdown-bg) 0%, rgba(66, 153, 225, 0.05) 100%);
}

.teams-table th {
    padding: 18px 20px;
    text-align: left;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.85rem;
    border-bottom: 2px solid var(--border);
}

.teams-table th:first-child,
.teams-table td:first-child {
    text-align: center;
    width: 60px;
    font-weight: 700;
    color: var(--accent);
}

.teams-table td {
    padding: 18px 20px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.teams-table tbody tr {
    transition: background-color 0.2s ease;
}

.teams-table tbody tr:hover {
    background: var(--countdown-bg);
}

.teams-table tbody tr:last-child td {
    border-bottom: none;
}

.rules-important {
    background: linear-gradient(135deg, var(--countdown-bg) 0%, rgba(66, 153, 225, 0.05) 100%);
    border-radius: 20px;
    padding: 40px;
    border: 2px solid var(--border);
    box-shadow: 0 8px 24px var(--shadow);
    margin-top: 50px;
}

.important-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 25px;
}

.important-icon {
    font-size: 2rem;
    line-height: 1;
}

.important-header h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    font-weight: 700;
    margin: 0;
}

.important-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.important-list li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 15px;
    padding-left: 35px;
    position: relative;
}

.important-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
    font-size: 1.3rem;
}

.important-list li:last-child {
    margin-bottom: 0;
}

.register-button {
    display: inline-block;
    padding: 18px 50px;
    font-size: 1.2rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: white;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    text-decoration: none;
    border-radius: 50px;
    box-shadow: 0 8px 20px rgba(66, 153, 225, 0.3);
    transition: all 0.3s ease;
    border: none;
}

.register-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(66, 153, 225, 0.4);
    background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%);
}

.register-button:active {
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .main-header {
        padding: 12px 20px;
        flex-wrap: wrap;
    }

    .logo-link .logo {
        height: 32px;
    }

    .header-tabs {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        margin-top: 10px;
        gap: 5px;
        overflow-x: auto;
        padding-bottom: 5px;
    }

    .tab-link {
        padding: 8px 15px;
        font-size: 0.85rem;
        white-space: nowrap;
    }

    .countdown {
        gap: 12px;
    }

    .countdown-item {
        min-width: 90px;
        padding: 20px 15px;
    }

    .countdown-value {
        font-size: 3rem;
    }

    .countdown-section {
        padding: 35px 25px;
    }

    .image-section {
        margin: 30px 0;
    }

    section {
        padding: 20px;
    }

    .register-button {
        padding: 16px 40px;
        font-size: 1.1rem;
    }

    .rules-header h1 {
        font-size: 1.8rem;
    }

    .rules-intro {
        font-size: 0.95rem;
    }

    .rules-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .rule-card {
        padding: 20px;
    }

    .rules-important {
        padding: 25px 20px;
    }

    .challenge-header {
        gap: 8px;
        margin-bottom: 10px;
    }

    .challenge-category,
    .challenge-vendor {
        font-size: 0.7rem;
        padding: 3px 8px;
    }

    .calendar-month {
        font-size: 1.6rem;
    }

    .calendar-year {
        font-size: 1rem;
    }

    .calendar-dates {
        gap: 15px;
    }

    .calendar-date {
        min-width: 70px;
        padding: 18px 20px;
    }

    .date-number {
        font-size: 2rem;
    }

    .calendar-separator {
        font-size: 1.5rem;
    }

    .calendar-duration {
        font-size: 0.9rem;
        padding: 6px 16px;
        margin-top: 12px;
    }

    .intro-lead {
        font-size: 1.1rem;
    }

    .intro-benefits {
        padding: 25px;
    }

    .intro-benefits p {
        font-size: 0.95rem;
    }

    .teams-table-container {
        padding: 20px;
    }

    .teams-table {
        font-size: 0.9rem;
    }

    .teams-table th,
    .teams-table td {
        padding: 12px 15px;
    }

}

@media (max-width: 480px) {
    .main-header {
        padding: 10px 15px;
    }

    .logo-link .logo {
        height: 28px;
    }

    .tab-link {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .countdown {
        gap: 8px;
    }

    .countdown-item {
        min-width: 75px;
        padding: 15px 10px;
    }

    .countdown-value {
        font-size: 2.2rem;
    }

    .countdown-label-small {
        font-size: 0.7rem;
        letter-spacing: 1px;
    }

    .countdown-section {
        padding: 30px 20px;
    }

    .countdown-label {
        font-size: 1rem;
        margin-bottom: 25px;
    }

    .image-section {
        margin: 25px 0;
    }

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

    .rules-intro {
        font-size: 0.9rem;
    }

    .rules-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .rule-card {
        padding: 18px;
    }

    .rule-icon {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }

    .rule-card h2 {
        font-size: 1.1rem;
    }

    .rule-card p {
        font-size: 0.85rem;
    }

    .rules-important {
        padding: 20px 18px;
    }

    .important-header h2 {
        font-size: 1.3rem;
    }

    .important-list li {
        font-size: 0.9rem;
        padding-left: 25px;
    }

    .challenge-header {
        gap: 6px;
        margin-bottom: 8px;
    }

    .challenge-category,
    .challenge-vendor {
        font-size: 0.65rem;
        padding: 2px 6px;
    }

    .calendar-month {
        font-size: 1.4rem;
    }

    .calendar-year {
        font-size: 0.9rem;
    }

    .calendar-dates {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .calendar-date {
        min-width: 60px;
        padding: 15px 18px;
    }

    .date-number {
        font-size: 1.8rem;
    }

    .date-label {
        font-size: 0.7rem;
    }

    .calendar-separator {
        font-size: 1.3rem;
    }

    .calendar-duration {
        font-size: 0.85rem;
        padding: 5px 14px;
        margin-top: 10px;
    }

    .intro-lead {
        font-size: 1rem;
    }

    .intro-benefits {
        padding: 20px;
    }

    .intro-benefits p {
        font-size: 0.9rem;
    }

    .teams-table-container {
        padding: 15px;
    }

    .teams-table {
        font-size: 0.85rem;
    }

    .teams-table th,
    .teams-table td {
        padding: 10px 12px;
    }

    .teams-table th {
        font-size: 0.75rem;
    }
}

.registration-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border);
}

.registration-header h1 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 10px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.registration-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
}

.registration-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    border: 2px solid var(--border);
    box-shadow: 0 4px 16px var(--shadow);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 12px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.registration-form .register-button {
    width: 100%;
    margin-top: 10px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .registration-form {
        padding: 30px 25px;
    }

    .registration-header h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .registration-form {
        padding: 25px 20px;
    }

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

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

    .form-group input,
    .form-group textarea {
        padding: 10px 14px;
        font-size: 0.95rem;
    }
}