/* ============================
   AI配图助手 - 现代风格样式
   ============================ */

/* CSS Variables */
:root {
    --primary: #00D9A5;
    --primary-dark: #00B386;
    --primary-light: #5FF5C7;
    --secondary: #00A3FF;
    --accent: #6366F1;

    --bg-primary: #ffffff;
    --bg-secondary: #F8FAFC;
    --bg-gradient: linear-gradient(135deg, #00D9A5 0%, #00A3FF 100%);
    --bg-gradient-alt: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --text-white: #ffffff;

    --shadow-sm: 0 1px 2px 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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(0, 217, 165, 0.3);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    overflow-x: hidden;
}

/* Background Decoration */
.bg-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: orbFloat 20s ease-in-out infinite;
}

.bg-orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
}

.bg-orb-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    bottom: 20%;
    left: -100px;
    animation-delay: -5s;
}

.bg-orb-3 {
    width: 250px;
    height: 250px;
    background: var(--accent);
    top: 40%;
    right: 10%;
    animation-delay: -10s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 30px) scale(1.05); }
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.logo-icon svg {
    display: block;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--bg-gradient);
    transition: var(--transition);
    border-radius: 1px;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-gradient);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 217, 165, 0.4);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 217, 165, 0.5);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-menu.active {
    display: flex;
}

.mobile-nav-link {
    padding: 1rem;
    text-decoration: none;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.mobile-nav-link:hover {
    background: var(--bg-secondary);
}

.mobile-nav-cta {
    background: var(--bg-gradient);
    color: white;
    text-align: center;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-bg-elements {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary);
    top: 20%;
    left: 10%;
    animation: float 6s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--secondary);
    top: 60%;
    right: 15%;
    animation: float 8s ease-in-out infinite;
    animation-delay: -2s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--accent);
    bottom: 20%;
    left: 30%;
    animation: float 7s ease-in-out infinite;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 217, 165, 0.1);
    border: 1px solid rgba(0, 217, 165, 0.3);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-dark);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
}

.title-line.highlight {
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--bg-gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 217, 165, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 217, 165, 0.5);
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 2px solid #e2e8f0;
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, #e2e8f0, transparent);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-light);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* Section Styles */
section {
    padding: 5rem 2rem;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 217, 165, 0.1);
    border: 1px solid rgba(0, 217, 165, 0.3);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-dark);
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* Tool Section */
.tool-section {
    background: var(--bg-primary);
}

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

/* Input Card */
.input-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 217, 165, 0.1) 0%, transparent 70%);
    animation: rotate 10s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.input-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.input-icon-wrap {
    width: 40px;
    height: 40px;
    background: var(--bg-gradient);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.textarea-wrapper {
    position: relative;
}

.textarea-wrapper textarea {
    width: 100%;
    min-height: 250px;
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: var(--transition);
    background: white;
}

.textarea-wrapper textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 217, 165, 0.1);
}

.textarea-wrapper textarea::placeholder {
    color: var(--text-light);
}

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.char-counter {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.char-count {
    font-weight: 600;
    color: var(--primary);
}

.btn-analyze {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-gradient);
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 217, 165, 0.4);
}

.btn-analyze:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 217, 165, 0.5);
}

.btn-animate-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Analysis Card */
.analysis-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    margin-bottom: 2rem;
    display: none;
}

.loading-state {
    text-align: center;
    padding: 3rem 2rem;
}

.loader {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
}

.loader-ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-ring:nth-child(2) {
    inset: 10px;
    border-top-color: var(--secondary);
    animation-duration: 1.5s;
    animation-direction: reverse;
}

.loader-ring:nth-child(3) {
    inset: 20px;
    border-top-color: var(--accent);
    animation-duration: 2s;
}

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

.loading-text {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.loading-progress {
    width: 200px;
    height: 4px;
    background: #e2e8f0;
    border-radius: 2px;
    margin: 0 auto;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--bg-gradient);
    border-radius: 2px;
    animation: progress 2s ease-in-out infinite;
}

@keyframes progress {
    0% { width: 0%; margin-left: 0; }
    50% { width: 100%; margin-left: 0; }
    100% { width: 0%; margin-left: 100%; }
}

.analysis-result {
    display: none;
}

.result-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
}

.result-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.result-title h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.result-title p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.result-item {
    background: white;
    padding: 1.25rem;
    border-radius: var(--radius-lg);
}

.result-item-full {
    grid-column: 1 / -1;
}

.result-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.result-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.keywords-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.keyword-tag {
    background: var(--bg-gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Suggestions Card */
.suggestions-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    display: none;
}

.suggestions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.suggestions-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.suggestions-title h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.style-selector {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

.custom-select {
    position: relative;
}

.select-trigger {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    border: 2px solid #e2e8f0;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.select-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    display: none;
    z-index: 100;
}

.custom-select.active .select-dropdown {
    display: block;
}

.select-option {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
}

.select-option:hover,
.select-option.selected {
    background: var(--bg-secondary);
    color: var(--primary);
}

.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.suggestion-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

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

.suggestion-preview {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.suggestion-info {
    padding: 1.25rem;
}

.suggestion-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.suggestion-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.suggestion-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.suggestion-keywords .keyword-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

/* Example Section */
.example-section {
    text-align: center;
    margin-top: 2rem;
}

.example-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.label-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(to right, transparent, #e2e8f0, transparent);
}

.btn-example {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    border: 2px dashed #e2e8f0;
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-example:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Features Section */
.features-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
}

.features-section .section-title {
    color: white;
}

.features-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
    border-color: rgba(0, 217, 165, 0.3);
}

.feature-visual {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
}

.feature-bg {
    position: absolute;
    inset: 0;
    background: var(--bg-gradient);
    border-radius: var(--radius-lg);
    opacity: 0.2;
    transform: rotate(15deg);
    transition: var(--transition);
}

.feature-card:hover .feature-bg {
    transform: rotate(0deg) scale(1.1);
    opacity: 0.3;
}

.feature-icon {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Guide Section */
.guide-section {
    background: var(--bg-primary);
}

.steps-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.step-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    flex: 1;
    min-width: 200px;
    max-width: 280px;
    transition: var(--transition);
    position: relative;
}

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

.step-visual {
    position: relative;
    margin-bottom: 1.5rem;
}

.step-number {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-gradient);
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: white;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    box-shadow: var(--shadow-md);
}

.step-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.step-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.connector-line {
    width: 2px;
    height: 30px;
    background: var(--bg-gradient);
}

.connector-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

/* Footer */
.footer {
    background: #0f172a;
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    font-size: 0.95rem;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

.footer-col a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    padding: 0.5rem 0;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* Scroll Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* Fade In Up Animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.fade-in-up.delay-1 { animation-delay: 0.1s; }
.fade-in-up.delay-2 { animation-delay: 0.2s; }
.fade-in-up.delay-3 { animation-delay: 0.3s; }
.fade-in-up.delay-4 { animation-delay: 0.4s; }
.fade-in-up.delay-5 { animation-delay: 0.5s; }

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

/* Responsive */
@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 5rem 1.5rem 3rem;
    }

    .title-line {
        font-size: 2.25rem;
    }

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

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    section {
        padding: 3rem 1.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .suggestions-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .steps-container {
        flex-direction: column;
    }

    .step-connector {
        transform: rotate(90deg);
        margin: 0.5rem 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .title-line {
        font-size: 1.875rem;
    }

    .input-card,
    .analysis-card,
    .suggestions-card {
        padding: 1.5rem;
    }

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

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

/* Print Styles */
@media print {
    .header,
    .hero-actions,
    .scroll-indicator,
    .bg-decoration,
    .card-glow {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 2rem;
    }

    section {
        page-break-inside: avoid;
    }
}