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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #ff8c42;
    --accent-hover: #ffaa70;
    --accent-glow: rgba(255, 140, 66, 0.25);
    --danger: #ff4a4a;
    --danger-hover: #ff6a6a;
    --border: #333;
    --shadow: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

h1 {
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: 1px;
}

h2 {
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg-primary);
    box-shadow: 0 0 0 rgba(255, 140, 66, 0);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    box-shadow: 0 0 0 rgba(255, 140, 66, 0);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

/* Add Link Section */
.add-link-section {
    background: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 4rem;
    border: 1px solid var(--border);
}

.add-link-section input[type="url"],
.add-link-section input[type="text"] {
    width: 100%;
    padding: 0.875rem;
    margin-bottom: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
    transition: border-color 0.2s ease;
}

.add-link-section input:focus {
    outline: none;
    border-color: var(--accent);
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    gap: 0.5rem;
}

.checkbox-label input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text-secondary);
    top: 2px;
    left: 2px;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:checked::before {
    background: white;
    transform: translateX(20px);
}

.checkbox-label span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Links Section */
.links-section {
    margin-bottom: 4rem;
}

.links-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.link-item {
    background: var(--bg-secondary);
    padding: 1rem 1.25rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 0 0 rgba(255, 140, 66, 0);
}

.link-item:hover {
    border-color: var(--border);
    box-shadow: 0 0 16px var(--accent-glow), 0 0 8px var(--accent-glow);
    transform: translateX(2px);
}

.link-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.link-url {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.875rem;
    word-break: break-all;
    flex: 1;
    transition: all 0.3s ease;
}

.link-url:hover {
    color: var(--accent-hover);
    text-shadow: 0 0 8px var(--accent-glow);
}

.link-note {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
    font-style: italic;
}

.link-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.link-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.click-count {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.delete-btn {
    background: transparent;
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
    transition: all 0.3s ease;
}

.delete-btn:hover {
    background: var(--danger);
    color: white;
    box-shadow: 0 0 10px rgba(255, 74, 74, 0.3);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    min-width: 400px;
    max-width: 90%;
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.modal-content input {
    width: 100%;
    padding: 0.9rem;
    margin-bottom: 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
}

.modal-content input:focus {
    outline: none;
    border-color: var(--accent);
}

.modal-buttons {
    display: flex;
    gap: 0.8rem;
    margin-top: 1.5rem;
}

.modal-buttons button {
    flex: 1;
}

.error-message {
    color: var(--danger);
    font-size: 0.9rem;
    margin-top: 1rem;
    text-align: center;
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 1rem 0.5rem;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .add-link-section {
        padding: 1.5rem;
    }

    .form-controls {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .modal-content {
        min-width: 90%;
        padding: 2rem;
    }

    .modal-buttons {
        flex-direction: column;
    }

    .link-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
}