/* ===========================
   CSS Reset & Variables
   =========================== */
:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #4caf50;
    --error-color: #f44336;
    --warning-color: #ffc107;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-light: #f9f9f9;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
    --transition: all 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    background: linear-gradient(
        135deg,
        var(--primary-color) 0%,
        var(--secondary-color) 100%
    );
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

/* ===========================
   Navigation Bar
   =========================== */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* ===========================
   Main Content
   =========================== */
.main-content {
    padding: 2rem 1rem;
    min-height: calc(100vh - 200px);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    text-align: center;
    padding: 3rem 1rem;
    margin-bottom: 2rem;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 400;
}

/* ===========================
   Container
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===========================
   Examples Card
   =========================== */
.examples-card {
    background: rgba(255, 243, 205, 0.95);
    border-left: 4px solid var(--warning-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.examples-title {
    color: #856404;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.examples-list {
    list-style: none;
}

.example-item {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    color: #856404;
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.example-item:hover {
    background: rgba(255, 255, 255, 0.9);
    border-left-color: var(--warning-color);
    transform: translateX(5px);
}

/* ===========================
   Input Section
   =========================== */
.input-section {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
}

.input-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.label-icon {
    font-size: 1.3rem;
}

.prompt-textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: var(--transition);
    margin-bottom: 1.5rem;
}

.prompt-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* ===========================
   Buttons
   =========================== */
.button-group {
    display: flex;
    gap: 1rem;
}

.btn {
    flex: 1;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-icon {
    font-size: 1.2rem;
}

.btn-primary {
    background: linear-gradient(
        135deg,
        var(--primary-color) 0%,
        var(--secondary-color) 100%
    );
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-color);
}

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

/* ===========================
   Loading Indicator
   =========================== */
.loading {
    display: none;
    text-align: center;
    padding: 3rem 2rem;
    background: white;
    border-radius: 16px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.loading.active {
    display: block;
}

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

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loading-text {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.loading-subtext {
    color: var(--text-secondary);
}

/* ===========================
   Results Section
   =========================== */
.results-section {
    display: none;
}

.results-section.active {
    display: block;
}

.result-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
}

.result-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
    color: var(--text-primary);
}

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

.result-content {
    background: var(--bg-light);
    border-radius: 12px;
    padding: 1.5rem;
}

.result-text {
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 400px;
    overflow-y: auto;
    color: var(--text-primary);
    line-height: 1.8;
    font-family: "Monaco", "Menlo", "Courier New", monospace;
    font-size: 0.95rem;
}

/* ===========================
   Action History
   =========================== */
.action-history {
    max-height: 300px;
    overflow-y: auto;
}

.action-item {
    padding: 1rem;
    border-left: 3px solid var(--primary-color);
    margin-bottom: 0.75rem;
    background: white;
    border-radius: 8px;
    font-size: 0.9rem;
}

.action-item strong {
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

/* ===========================
   Screenshot
   =========================== */
.screenshot-container {
    text-align: center;
}

.screenshot-container img {
    width: 100%;
    max-width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.screenshot-container img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* ===========================
   Stats Section
   =========================== */
.stats-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 3rem;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--secondary-color)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem 1rem;
    text-align: center;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color);
}

/* ===========================
   Scrollbar Styling
   =========================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

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

    .nav-links {
        gap: 1rem;
    }

    .button-group {
        flex-direction: column;
    }

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

    .input-section,
    .result-card {
        padding: 1.5rem;
    }
}

/* ===========================
   Utility Classes
   =========================== */
.success-icon {
    color: var(--success-color);
}

.error-icon {
    color: var(--error-color);
}

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

/* ===========================
   Animations
   =========================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    animation: fadeIn 0.5s ease;
}