/* Linktree-style Layout with Binance Design System */
:root {
    /* Binance Color Palette */
    --primary-yellow: #F0B90B;
    --primary-dark: #1E2329;
    --secondary-dark: #2B3139;
    --tertiary-dark: #474D57;
    --text-primary: #FFFFFF;
    --text-secondary: #B7BDC6;
    --text-tertiary: #848E9C;
    --border-color: #2B3139;
    --hover-bg: #2B3139;
    --success: #02C076;
    --error: #F84960;
    --warning: #F0B90B;
    
    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Navigation Bar */
.navbar {
    background-color: var(--primary-dark);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-yellow);
}

.logo-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-yellow);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: all 0.2s ease;
    position: relative;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
}

.nav-link:hover {
    color: var(--text-primary);
    background-color: var(--hover-bg);
}

.nav-link.active {
    color: var(--primary-yellow);
    background-color: rgba(240, 185, 11, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: var(--spacing-md);
    right: var(--spacing-md);
    height: 2px;
    background-color: var(--primary-yellow);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-dark) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: var(--font-size-base);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Linktree-style Header */
.header {
    padding: var(--spacing-3xl) var(--spacing-lg) var(--spacing-2xl);
    text-align: center;
}

.profile-container {
    max-width: 400px;
    margin: 0 auto;
}

.profile-avatar {
    margin-bottom: var(--spacing-lg);
}

.avatar-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto;
    border: 4px solid var(--primary-yellow);
    box-shadow: var(--shadow-lg);
}

.profile-name {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--text-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.profile-bio {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.5;
}

/* Linktree-style Links Container */
.links-container {
    max-width: 500px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg) var(--spacing-3xl);
}

.link-item {
    margin-bottom: var(--spacing-lg);
}

.link-button {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.link-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-yellow) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.link-button:hover {
    border-color: var(--primary-yellow);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.link-button:hover::before {
    opacity: 0.1;
}

.link-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-right: var(--spacing-lg);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.link-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    position: relative;
    z-index: 1;
}

.link-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
}

.link-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    line-height: 1.3;
}

.link-arrow {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    transition: all 0.2s ease;
    position: relative;
    z-index: 1;
}

.link-button:hover .link-arrow {
    color: var(--primary-yellow);
    transform: translateX(4px);
}

/* Platform specific colors */
.telegram .link-icon {
    background-color: #0088cc;
    color: white;
}

.youtube .link-icon {
    background-color: #ff0000;
    color: white;
}

.instagram .link-icon {
    background-color: #e4405f;
    color: white;
}

.binance .link-icon {
    background-color: var(--primary-yellow);
    color: var(--primary-dark);
}

.bybit .link-icon {
    background-color: #f7931a;
    color: white;
}

.okx .link-icon {
    background-color: #000000;
    color: white;
}

.bitget .link-icon {
    background-color: #1da1f2;
    color: white;
}

.gateio .link-icon {
    background-color: #4a90e2;
    color: white;
}

.mexc .link-icon {
    background-color: #ff6b6b;
    color: white;
}

.darkex .link-icon {
    background-color: #6c5ce7;
    color: white;
}

.twitter-feed .link-icon {
    background-color: #1da1f2;
    color: white;
}

/* Twitter Timeline Modal */
.timeline-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timeline-modal.active {
    display: flex;
    opacity: 1;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal-content {
    background-color: var(--secondary-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.close-button {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.close-button:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-lg) var(--spacing-xl);
    max-height: calc(90vh - 80px);
    overflow-y: auto;
}

.timeline-container {
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-container:empty::before {
    content: 'Tweet\'ler yükleniyor...';
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

.footer p {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

/* Base Button Styles */
.evm-button,
.trx-button,
.btc-button,
.sol-button {
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
    width: 100%;
    margin-top: 0.5rem;
    color: white;
}

/* EVM Button - Blue gradient */
.evm-button {
    background: linear-gradient(135deg, #627eea 0%, #4c63d2 100%);
}

.evm-button:hover {
    background: linear-gradient(135deg, #4c63d2 0%, #3a4bc2 100%);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(98, 126, 234, 0.3);
}

/* TRX Button - Red gradient */
.trx-button {
    background: linear-gradient(135deg, #ff060a 0%, #cc0000 100%);
}

.trx-button:hover {
    background: linear-gradient(135deg, #cc0000 0%, #aa0000 100%);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(255, 6, 10, 0.3);
}

/* BTC Button - Orange gradient */
.btc-button {
    background: linear-gradient(135deg, #f7931a 0%, #e8821e 100%);
}

.btc-button:hover {
    background: linear-gradient(135deg, #e8821e 0%, #d1710c 100%);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(247, 147, 26, 0.3);
}

/* SOL Button - Purple gradient */
.sol-button {
    background: linear-gradient(135deg, #9945ff 0%, #14f195 100%);
}

.sol-button:hover {
    background: linear-gradient(135deg, #8a3de8 0%, #12d885 100%);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(153, 69, 255, 0.3);
}

/* Common button states */
.evm-button:active,
.trx-button:active,
.btc-button:active,
.sol-button:active {
    transform: translateY(0);
}

.evm-button:disabled,
.trx-button:disabled,
.btc-button:disabled,
.sol-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.evm-button .button-text,
.trx-button .button-text,
.btc-button .button-text,
.sol-button .button-text {
    font-weight: 600;
}

/* Card Verify Container */
.card-verify {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background: var(--card-bg);
    pointer-events: auto;
    position: relative;
    z-index: 10;
}

/* Form Select Styles */
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    padding-right: 3rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-yellow);
    box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.1);
}

.form-select:hover {
    border-color: var(--border-hover);
}

.form-select option {
    background: var(--card-bg);
    color: var(--text-primary);
    padding: 0.5rem;
}

/* Checkbox Group Styles */
.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.checkbox-group .checkbox-container {
    margin-bottom: 0;
}

.checkbox-group .checkbox-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.checkbox-group .checkbox-text i {
    width: 16px;
    text-align: center;
    color: var(--text-secondary);
}

/* Verification Pages Styles */
.verification-container {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.verification-content {
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.verification-icon {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 3rem;
    color: white;
    background: white;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.verification-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.verification-icon.evm,
.verification-icon.trx,
.verification-icon.btc,
.verification-icon.sol {
    background: white;
}

.verification-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.verify-main-button {
    background: linear-gradient(135deg, var(--primary-yellow) 0%, #e6a700 100%);
    color: var(--primary-dark);
    border: none;
    border-radius: var(--radius-md);
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.verify-main-button:hover {
    background: linear-gradient(135deg, #e6a700 0%, #cc9500 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(240, 185, 11, 0.3);
}

.verify-main-button:active {
    transform: translateY(0);
}

.verify-main-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.back-button {
    background: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.back-button:hover {
    background: var(--card-bg);
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
        height: 60px;
    }
    
    .nav-logo {
        gap: var(--spacing-sm);
    }
    
    .logo-img {
        width: 32px;
        height: 32px;
    }
    
    .logo-text {
        font-size: var(--font-size-base);
    }
    
    .nav-menu {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .header {
        padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-xl);
    }
    
    .avatar-img {
        width: 100px;
        height: 100px;
    }
    
    .profile-name {
        font-size: var(--font-size-2xl);
    }
    
    .profile-bio {
        font-size: var(--font-size-base);
    }
    
    .links-container {
        padding: 0 var(--spacing-md) var(--spacing-2xl);
    }
    
    .link-button {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .link-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
        margin-right: var(--spacing-md);
    }
    
    .link-title {
        font-size: var(--font-size-base);
    }
    
    .link-subtitle {
        font-size: var(--font-size-xs);
    }
    
    .modal-overlay {
        padding: var(--spacing-md);
    }
    
    .modal-content {
        max-height: 95vh;
    }
    
    .modal-header,
    .modal-body {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }
    
    .nav-logo {
        order: 1;
    }
    
    .nav-menu {
        order: 2;
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
    }
    
    .header {
        padding: var(--spacing-xl) var(--spacing-sm) var(--spacing-lg);
    }
    
    .avatar-img {
        width: 80px;
        height: 80px;
    }
    
    .profile-name {
        font-size: var(--font-size-xl);
    }
    
    .profile-bio {
        font-size: var(--font-size-sm);
    }
    
    .links-container {
        padding: 0 var(--spacing-sm) var(--spacing-xl);
    }
    
    .link-button {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .link-icon {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        margin-right: var(--spacing-sm);
    }
    
    .link-title {
        font-size: var(--font-size-sm);
    }
    
    .link-subtitle {
        font-size: var(--font-size-xs);
    }
}

/* Loading and Error States */
.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
}

.error-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-tertiary);
}

.error-state p {
    margin-bottom: var(--spacing-md);
}

.twitter-fallback {
    color: var(--primary-yellow);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--primary-yellow);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    display: inline-block;
}

.twitter-fallback:hover {
    background-color: var(--primary-yellow);
    color: var(--primary-dark);
}

/* Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-yellow);
    color: var(--primary-dark);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-sm);
    z-index: 1000;
    transition: top 0.3s;
    font-weight: 600;
}

.skip-link:focus {
    top: 6px;
}

/* Focus styles */
*:focus {
    outline: 2px solid var(--primary-yellow);
    outline-offset: 2px;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-yellow);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: #e6a700;
}

/* Smooth transitions */
* {
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

/* Animation for link items */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.link-item {
    animation: fadeInUp 0.6s ease forwards;
}

.link-item:nth-child(1) { animation-delay: 0.1s; }
.link-item:nth-child(2) { animation-delay: 0.2s; }
.link-item:nth-child(3) { animation-delay: 0.3s; }
.link-item:nth-child(4) { animation-delay: 0.4s; }
.link-item:nth-child(5) { animation-delay: 0.5s; }
.link-item:nth-child(6) { animation-delay: 0.6s; }
.link-item:nth-child(7) { animation-delay: 0.7s; }
.link-item:nth-child(8) { animation-delay: 0.8s; }
.link-item:nth-child(9) { animation-delay: 0.9s; }
.link-item:nth-child(10) { animation-delay: 1.0s; }
.link-item:nth-child(11) { animation-delay: 1.1s; }