/* =========================================
   HumanizeAI – Premium Design System
   ========================================= */

/* --- CSS Variables / Tokens --- */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-tertiary: #16161f;
    --bg-card: rgba(22, 22, 31, 0.7);
    --bg-card-hover: rgba(30, 30, 45, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-border: rgba(255, 255, 255, 0.06);

    --text-primary: #f0f0f5;
    --text-secondary: #9494a8;
    --text-tertiary: #5e5e72;
    --text-muted: #3e3e52;

    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --accent-tertiary: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #06b6d4 100%);
    --accent-gradient-alt: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --accent-glow: rgba(99, 102, 241, 0.15);

    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 120px;
    --border-radius: 12px;
    --border-radius-lg: 20px;
    --border-radius-xl: 28px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: var(--font-main);
    font-size: inherit;
    color: inherit;
}

textarea {
    font-family: var(--font-main);
    resize: none;
}

img { max-width: 100%; }

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Animated Background --- */
.bg-animation {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: orbFloat 20s infinite ease-in-out;
}

.bg-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.bg-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.12), transparent 70%);
    top: 40%;
    right: -150px;
    animation-delay: -7s;
}

.bg-orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1), transparent 70%);
    bottom: -100px;
    left: 30%;
    animation-delay: -14s;
}

@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -30px) scale(1.1); }
    50% { transform: translate(-20px, 40px) scale(0.95); }
    75% { transform: translate(30px, 20px) scale(1.05); }
}

.bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 50% at 50% 50%, black 40%, transparent 100%);
}

/* --- Gradient Text --- */
.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.01em;
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-gradient-alt);
    color: #fff;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}
.btn-primary:hover {
    box-shadow: 0 6px 30px rgba(99, 102, 241, 0.45);
    transform: translateY(-1px);
}

.btn-ghost {
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}
.btn-ghost:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-glass);
}

.btn-outline {
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
    border-radius: 12px;
}

.btn-block {
    width: 100%;
    padding: 14px 24px;
}

/* --- Section Shared --- */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* =========================================
   NAVBAR
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
    backdrop-filter: blur(20px);
    background: rgba(10, 10, 15, 0.6);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(10, 10, 15, 0.85);
    border-bottom-color: var(--border-color);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-accent {
    background: var(--accent-gradient-alt);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gradient-alt);
    border-radius: 1px;
    transition: width var(--transition-base);
}
.nav-link:hover {
    color: var(--text-primary);
}
.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 12px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}
.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* =========================================
   HERO
   ========================================= */
.hero {
    position: relative;
    z-index: 1;
    padding: 180px 0 100px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-glass);
    border: 1px solid var(--bg-glass-border);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
    animation: pulse 2s infinite;
}

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

.hero-title {
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-top: 64px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
}

.stat-suffix {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 4px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

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

/* =========================================
   HUMANIZER TOOL
   ========================================= */
.humanizer-section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding) 0;
}

.mode-selector {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 32px;
    padding: 4px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}

.mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-tertiary);
    transition: all var(--transition-base);
}
.mode-btn:hover {
    color: var(--text-secondary);
}
.mode-btn.active {
    color: var(--text-primary);
    background: var(--accent-gradient-alt);
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.3);
}

.editor-wrapper {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    align-items: stretch;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    min-height: 420px;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.02),
        0 20px 60px -10px rgba(0, 0, 0, 0.5);
}

.editor-panel {
    display: flex;
    flex-direction: column;
    padding: 0;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.panel-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.panel-actions {
    display: flex;
    gap: 4px;
}

.panel-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
}
.panel-btn:hover {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.04);
}

.editor-textarea {
    flex: 1;
    padding: 20px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.7;
    outline: none;
    min-height: 320px;
}
.editor-textarea::placeholder {
    color: var(--text-muted);
}

.editor-output {
    flex: 1;
    padding: 20px;
    font-size: 0.95rem;
    line-height: 1.7;
    overflow-y: auto;
    min-height: 320px;
}

.output-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 280px;
    color: var(--text-muted);
    text-align: center;
    gap: 16px;
}
.output-placeholder p {
    font-size: 0.9rem;
}

.panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.78rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

/* Center Humanize Button */
.editor-center {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 10px;
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.2);
}

.humanize-btn {
    position: relative;
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background: var(--accent-gradient-alt);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow:
        0 6px 30px rgba(99, 102, 241, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all var(--transition-base);
    overflow: hidden;
}
.humanize-btn:not(:disabled):hover {
    transform: scale(1.05);
    box-shadow:
        0 8px 40px rgba(99, 102, 241, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}
.humanize-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.humanize-btn-content,
.humanize-btn-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    position: absolute;
    inset: 0;
    transition: all var(--transition-base);
}

.humanize-btn-loading {
    opacity: 0;
    transform: scale(0.8);
}

.humanize-btn.loading .humanize-btn-content {
    opacity: 0;
    transform: scale(0.8);
}
.humanize-btn.loading .humanize-btn-loading {
    opacity: 1;
    transform: scale(1);
}

.spinner {
    width: 28px;
    height: 28px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* --- Score Cards --- */
.score-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 32px;
    animation: fadeInUp 0.6s ease both;
}

.score-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 20px;
    transition: all var(--transition-base);
}
.score-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.score-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.detector-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.score-badge {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.score-pass {
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.score-warn {
    color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
}
.score-fail {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.score-bar-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.score-bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 3px;
    overflow: hidden;
}

.score-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--accent-gradient);
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.score-percent {
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
    min-width: 40px;
    text-align: right;
}

.score-label {
    font-size: 0.72rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* =========================================
   FEATURES
   ========================================= */
.features-section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.feature-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}
.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.12);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* =========================================
   HOW IT WORKS
   ========================================= */
.how-it-works-section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding) 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all var(--transition-slow);
    position: relative;
}
.step-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

.step-number {
    font-size: 3.5rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.25;
    line-height: 1;
    margin-bottom: 20px;
}

.step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.step-content p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 24px;
}

.step-visual {
    display: flex;
    justify-content: center;
}

.step-mockup {
    padding: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 220px;
}

.mockup-line {
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.05);
}
.mockup-line.w-60 { width: 60%; }
.mockup-line.w-80 { width: 80%; }
.mockup-line.w-90 { width: 90%; }
.mockup-line.w-100 { width: 100%; }

.mockup-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    text-align: center;
}
.mockup-btn.active-mock {
    color: #fff;
    background: var(--accent-gradient-alt);
    border-color: transparent;
}

.mockup-score {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--success);
    padding: 12px;
}

.score-ring {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 3px solid var(--success);
    border-top-color: transparent;
    animation: spin 1.5s linear infinite;
}

/* =========================================
   PRICING
   ========================================= */
.pricing-section {
    position: relative;
    z-index: 1;
    padding: var(--section-padding) 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-items: start;
}

.pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 36px 28px;
    transition: all var(--transition-slow);
    position: relative;
}
.pricing-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.3);
}

.pricing-popular {
    border-color: var(--accent-primary);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.06) 0%, var(--bg-card) 100%);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.1);
    transform: scale(1.02);
}
.pricing-popular:hover {
    transform: scale(1.02) translateY(-4px);
    border-color: var(--accent-secondary);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    background: var(--accent-gradient-alt);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.pricing-header {
    text-align: center;
    margin-bottom: 28px;
}

.pricing-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.pricing-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.price {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -0.04em;
}

.period {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.pricing-desc {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 28px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
    position: relative;
    z-index: 1;
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-top: 16px;
    line-height: 1.6;
    max-width: 280px;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    font-size: 0.88rem;
    color: var(--text-tertiary);
    padding: 4px 0;
    transition: color var(--transition-fast);
}
.footer-links a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
    display: flex;
}
.social-links a:hover {
    color: var(--text-primary);
}

/* =========================================
   TOAST
   ========================================= */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    z-index: 9999;
    opacity: 0;
    transition: all var(--transition-base);
    pointer-events: none;
}
.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
    .features-grid,
    .steps-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-popular {
        transform: none;
    }
    .pricing-popular:hover {
        transform: translateY(-4px);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links,
    .nav-actions {
        display: none;
    }

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

    .hero {
        padding: 140px 0 60px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .editor-wrapper {
        grid-template-columns: 1fr;
        border-radius: var(--border-radius-lg);
    }

    .editor-center {
        border-left: none;
        border-right: none;
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        padding: 16px;
    }

    .humanize-btn {
        width: 100%;
        height: 52px;
        border-radius: 14px;
    }

    .humanize-btn-content,
    .humanize-btn-loading {
        flex-direction: row;
    }

    .score-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid,
    .steps-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .mode-selector {
        flex-direction: column;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

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

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

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* --- Selection --- */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

/* --- Typing Animation for output --- */
.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--accent-primary);
    margin-left: 2px;
    animation: blink 0.8s step-end infinite;
    vertical-align: text-bottom;
}

@keyframes blink {
    50% { opacity: 0; }
}