:root {
    /* Color Palette */
    --primary-hue: 250;
    --primary-sat: 80%;
    --primary-light: 60%;

    --primary-50: hsl(var(--primary-hue), var(--primary-sat), 95%);
    --primary-100: hsl(var(--primary-hue), var(--primary-sat), 90%);
    --primary-200: hsl(var(--primary-hue), var(--primary-sat), 80%);
    --primary-300: hsl(var(--primary-hue), var(--primary-sat), 70%);
    --primary-400: hsl(var(--primary-hue), var(--primary-sat), 65%);
    --primary-500: hsl(var(--primary-hue), var(--primary-sat), var(--primary-light));
    --primary-600: hsl(var(--primary-hue), var(--primary-sat), 50%);
    --primary-700: hsl(var(--primary-hue), var(--primary-sat), 40%);
    --primary-800: hsl(var(--primary-hue), var(--primary-sat), 30%);
    --primary-900: hsl(var(--primary-hue), var(--primary-sat), 20%);

    --accent-hue: 320;
    --accent-500: hsl(var(--accent-hue), 70%, 60%);
    --accent-600: hsl(var(--accent-hue), 70%, 50%);

    /* Neutrals */
    --gray-50: hsl(220, 20%, 98%);
    --gray-100: hsl(220, 15%, 95%);
    --gray-200: hsl(220, 13%, 90%);
    --gray-300: hsl(220, 12%, 80%);
    --gray-400: hsl(220, 10%, 60%);
    --gray-500: hsl(220, 10%, 45%);
    --gray-600: hsl(220, 12%, 35%);
    --gray-700: hsl(220, 15%, 25%);
    --gray-800: hsl(220, 18%, 15%);
    --gray-900: hsl(220, 20%, 10%);

    /* Semantic Colors */
    --success: hsl(140, 70%, 50%);
    --warning: hsl(40, 90%, 55%);
    --error: hsl(0, 70%, 55%);
    --info: hsl(200, 80%, 55%);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* 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), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-900) 50%, var(--accent-600) 100%);
    background-attachment: fixed;
    color: var(--gray-100);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(119, 198, 255, 0.2) 0%, transparent 50%);
    animation: backgroundShift 20s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes backgroundShift {

    0%,
    100% {
        opacity: 0.5;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

/* Screen Management */
.screen {
    display: none;
    position: relative;
    z-index: 1;
}

.screen.active {
    display: block;
    animation: fadeIn var(--transition-slow);
}

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

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

/* Login Screen */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.login-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-2xl);
    animation: slideUp var(--transition-slow);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.login-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.logo-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-lg);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: white;
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--primary-200), var(--accent-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--gray-300);
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(0);
}

.btn-google {
    background: white;
    color: var(--gray-700);
    margin-bottom: var(--space-lg);
}

.btn-google:hover {
    background: var(--gray-50);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    position: relative;
    overflow: hidden;
}

.btn-primary::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 var(--transition-slow);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-small {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    width: auto;
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--space-xl) 0;
    color: var(--gray-400);
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.divider span {
    padding: 0 var(--space-md);
    font-size: 0.875rem;
}

/* Forms */
.email-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-200);
}

.form-group input {
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all var(--transition-base);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-400);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(120, 119, 198, 0.1);
}

.form-group input::placeholder {
    color: var(--gray-500);
}

.form-group small {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.input-with-button {
    display: flex;
    gap: var(--space-sm);
}

.input-with-button input {
    flex: 1;
}

.toggle-auth {
    text-align: center;
    margin-top: var(--space-lg);
    font-size: 0.875rem;
    color: var(--gray-300);
}

.toggle-auth a {
    color: var(--primary-300);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.toggle-auth a:hover {
    color: var(--primary-200);
}

/* Error Messages */
.error-message {
    padding: var(--space-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    color: #fca5a5;
    font-size: 0.875rem;
    margin-top: var(--space-lg);
}

.error-message.hidden {
    display: none;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 1.25rem;
    font-weight: 700;
}

.navbar-brand .logo-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-300);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 2px solid var(--primary-400);
}

/* Dashboard Main */
.dashboard-main {
    padding: var(--space-3xl) var(--space-xl);
}

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
}

.dashboard-header {
    margin-bottom: var(--space-3xl);
}

.dashboard-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--primary-200), var(--accent-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dashboard-header p {
    color: var(--gray-300);
    font-size: 1.1rem;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: var(--space-xl);
}

@media (max-width: 768px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

/* Card */
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
    animation: slideUp var(--transition-slow);
    animation-fill-mode: both;
}

.card:nth-child(1) {
    animation-delay: 0ms;
}

.card:nth-child(2) {
    animation-delay: 100ms;
}

.card:nth-child(3) {
    animation-delay: 200ms;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.card-header p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* GitHub Config */
.github-config {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

/* Repos Container */
.repos-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-height: 600px;
    overflow-y: auto;
    padding-right: var(--space-sm);
}

.repos-container::-webkit-scrollbar {
    width: 8px;
}

.repos-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
}

.repos-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.repos-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.repo-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.repo-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-400);
    transform: translateX(4px);
}

.repo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.repo-name {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--primary-200);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.repo-visibility {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.25rem var(--space-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.repo-visibility.private {
    background: rgba(239, 68, 68, 0.2);
    color: #fca5a5;
}

.repo-visibility.public {
    background: rgba(34, 197, 94, 0.2);
    color: #86efac;
}

.repo-description {
    color: var(--gray-300);
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.repo-stats {
    display: flex;
    gap: var(--space-lg);
    font-size: 0.85rem;
    color: var(--gray-400);
}

.repo-stat {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.repo-stat svg {
    width: 16px;
    height: 16px;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
    gap: var(--space-lg);
}

.loading-state.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-400);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Placeholder Card */
.placeholder-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 300px;
    opacity: 0.6;
}

.placeholder-card .card-icon {
    margin-bottom: var(--space-lg);
}

.placeholder-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.placeholder-card p {
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-content {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .navbar-actions {
        width: 100%;
        justify-content: space-between;
    }

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

    .login-card {
        padding: var(--space-xl);
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }
}

/* Help Links */
.help-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: var(--space-sm);
    color: var(--primary-300);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    background: rgba(120, 119, 198, 0.1);
}

.help-link:hover {
    color: var(--primary-200);
    background: rgba(120, 119, 198, 0.2);
    transform: translateY(-1px);
}

.help-link-small {
    color: var(--primary-300);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    border-bottom: 1px dotted var(--primary-400);
}

.help-link-small:hover {
    color: var(--primary-200);
    border-bottom-style: solid;
}

.form-group label {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}/* Notes Card Styles */
.notes-form {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.notes-form-actions {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.notes-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    max-height: 500px;
    overflow-y: auto;
    padding-right: var(--space-sm);
}

.notes-container::-webkit-scrollbar {
    width: 8px;
}

.notes-container::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
}

.notes-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.notes-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

.note-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: all var(--transition-base);
    position: relative;
}

.note-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary-400);
    transform: translateX(4px);
}

.note-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.note-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--primary-200);
    margin: 0;
    flex: 1;
    word-break: break-word;
}

.note-actions {
    display: flex;
    gap: var(--space-xs);
    flex-shrink: 0;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.note-item:hover .note-actions {
    opacity: 1;
}

.note-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.75rem;
    color: var(--gray-200);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.note-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.note-btn.edit-btn:hover {
    border-color: var(--primary-400);
    color: var(--primary-200);
}

.note-btn.delete-btn:hover {
    border-color: rgba(239, 68, 68, 0.5);
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.1);
}

.note-content {
    color: var(--gray-300);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
    white-space: pre-wrap;
    word-break: break-word;
}

.note-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255,255, 0.05);
}

.note-date {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.notes-empty {
    text-align: center;
    padding: var(--space-3xl);
    color: var(--gray-400);
}

.notes-empty svg {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-lg);
    opacity: 0.5;
}

.notes-empty h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
    color: var(--gray-300);
}

.notes-empty p {
    font-size: 0.9rem;
}