@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Outfit:wght@600;700;800&display=swap');

:root {
    --color-bg: #0a0e27;
    --color-surface: #151937;
    --color-surface-light: #1e2347;
    --color-primary: #00d9ff;
    --color-secondary: #ff6b9d;
    --color-accent: #7c3aed;
    --color-text: #e4e9f7;
    --color-text-muted: #8892b8;
    --color-border: rgba(228, 233, 247, 0.1);
    
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(0, 217, 255, 0.2);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 217, 255, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 157, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    z-index: 1;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    margin-bottom: var(--spacing-sm);
}

p {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    line-height: 1.7;
    color: var(--color-text-muted);
}

.hero {
    text-align: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
    animation: slideDown 0.6s ease;
}

.hero-title {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 1024px) {
    .layout {
        grid-template-columns: 420px 1fr;
    }
}

.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 217, 255, 0.3);
}

.card:hover::before {
    opacity: 1;
}

.card-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.card-icon {
    font-size: 1.5rem;
}

.selector-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.selector-wrapper {
    position: relative;
}

.selector-wrapper::after {
    content: '▼';
    position: absolute;
    right: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--color-primary);
    font-size: 0.75rem;
}

.gym-select {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    appearance: none;
    transition: all 0.3s ease;
}

.gym-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 217, 255, 0.1);
}

.gym-select:hover {
    border-color: rgba(0, 217, 255, 0.4);
    background: var(--color-surface);
}

.gym-select option {
    background: var(--color-surface);
    color: var(--color-text);
    padding: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1.125rem 2.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn::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;
}

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

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

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

.btn-full {
    width: 100%;
    margin-top: var(--spacing-md);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-secondary:hover {
    background: rgba(0, 217, 255, 0.1);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-item {
    padding: var(--spacing-md);
    background: var(--color-surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: var(--color-primary);
    background: rgba(0, 217, 255, 0.05);
    transform: translateX(4px);
}

.feature-icon {
    font-size: 1.25rem;
    color: var(--color-primary);
}

.feature-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-card {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-surface-light);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.graph-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.graph-gym-name {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: var(--spacing-sm);
}

.graphs-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.graph-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    overflow: hidden;
}

.graph-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 217, 255, 0.3);
}

.graph-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.loading-container {
    text-align: center;
    padding: var(--spacing-2xl);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-lg);
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    color: var(--color-text-muted);
    font-size: 1.125rem;
}

.site-footer {
    text-align: center;
    padding: 1.5rem 0;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.chatbot-container {
    max-width: 900px;
    margin: 0 auto;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .card {
        padding: var(--spacing-lg);
    }

    .graphs-container {
        grid-template-columns: 1fr;
    }

    .feature-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .btn {
        padding: 1rem 2rem;
        font-size: 0.9375rem;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .graphs-container {
        gap: var(--spacing-lg);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

button:focus-visible,
select:focus-visible,
a:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}
/* Chat Interface Styles */
.chat-card {
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 700px;
    max-height: 80vh;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: var(--color-surface-light);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

.chat-message {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    animation: messageSlideIn 0.3s ease;
}

.user-message {
    flex-direction: row-reverse;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
    background: var(--color-surface-light);
    border: 2px solid var(--color-border);
}

.user-message .message-avatar {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: var(--color-primary);
}

.message-content {
    max-width: 70%;
    background: var(--color-surface-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.user-message .message-content {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(124, 58, 237, 0.1));
    border-color: rgba(0, 217, 255, 0.3);
}

.message-content p {
    margin: 0;
    color: var(--color-text);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.quick-suggestions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.suggestion-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.suggestion-btn:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    align-items: center;
    padding: 4px 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
    animation: typingBounce 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

.error-message .message-content {
    background: rgba(255, 107, 157, 0.1);
    border-color: var(--color-secondary);
}

.chat-input-container {
    padding: var(--spacing-lg);
    background: var(--color-surface-light);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.chat-input {
    flex: 1;
    padding: 1rem 1.25rem;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.chat-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(0, 217, 255, 0.1);
}

.chat-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.chat-send-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.chat-send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.chat-send-btn:disabled {
    cursor: not-allowed;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes typingBounce {
    0%, 60%, 100% {
        transform: translateY(0);
    }
    30% {
        transform: translateY(-8px);
    }
}

/* Mobile responsive styles for chat */
@media (max-width: 768px) {
    .chat-card {
        height: 600px;
    }

    .message-content {
        max-width: 85%;
    }

    .quick-suggestions {
        grid-template-columns: 1fr;
    }

    .chat-messages {
        padding: var(--spacing-lg);
    }
}