/* =========================================
   Design Tokens
========================================= */
:root {
    --color-bg-gradient-start: #4f46e5;
    --color-bg-gradient-end: #7c3aed;

    --color-surface: #ffffff;
    --color-surface-alt: #f7fafc;
    --color-surface-soft: #edf2f7;

    --color-text-main: #1a202c;
    --color-text-muted: #4a5568;
    --color-text-soft: #718096;
    --color-text-inverse: #ffffff;

    --color-primary: #6366f1;
    --color-primary-soft: #e0e7ff;
    --color-primary-strong: #4f46e5;
    --color-accent: #f97316;

    --shadow-soft: 0 4px 16px rgba(15, 23, 42, 0.08);
    --shadow-medium: 0 8px 24px rgba(15, 23, 42, 0.12);
    --shadow-strong: 0 12px 32px rgba(15, 23, 42, 0.16);
    --shadow-hover: 0 16px 40px rgba(15, 23, 42, 0.18);

    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --radius-pill: 999px;

    --spacing-section: clamp(2.5rem, 5vw, 4rem);
    --spacing-card: clamp(1.5rem, 3vw, 2.5rem);

    --transition-fast: 180ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-med: 280ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 2rem;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--color-bg-gradient-start) 0%, var(--color-bg-gradient-end) 100%);
    background-attachment: fixed;
    color: var(--color-text-main);
    line-height: 1.6;
    min-height: 100vh;
    padding: clamp(1rem, 2vw, 1.5rem);
    animation: fadeIn 0.5s ease-out;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
}

/* =========================================
   Animations
========================================= */
@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(6px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes slideDown {
    from { 
        opacity: 0; 
        transform: translateY(-16px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes slideUp {
    from { 
        opacity: 0; 
        transform: translateY(16px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(24px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* =========================================
   Layout
========================================= */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-section) clamp(1rem, 2vw, 1.5rem);
}

/* =========================================
   Header / Hero Intro
========================================= */
header {
    text-align: center;
    color: var(--color-text-inverse);
    margin-bottom: clamp(2rem, 5vw, 3.5rem);
    padding: clamp(1rem, 3vw, 2rem) 0;
    animation: slideDown 0.6s ease-out;
}

header h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 0.75rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    text-shadow: 0 4px 16px rgba(15, 23, 42, 0.3);
    line-height: 1.1;
}

.subtitle {
    font-size: clamp(1.1rem, 2.2vw, 1.35rem);
    opacity: 0.95;
    font-weight: 400;
    max-width: 42rem;
    margin: 0 auto;
    line-height: 1.5;
}

/* Inline code tokens */
code {
    background: rgba(15, 23, 42, 0.7);
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-pill);
    font-family: "SF Mono", Menlo, Monaco, "Courier New", monospace;
    color: #fde047;
    font-weight: 600;
    font-size: 0.9em;
    border: 1px solid rgba(250, 204, 21, 0.2);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.2);
}

/* =========================================
   Card-like Sections (Hero / How / CTA / Report)
========================================= */
.hero,
.how-it-works,
.cta,
.report-issue {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-lg);
    padding: var(--spacing-card);
    margin-bottom: clamp(2rem, 4vw, 3rem);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(226, 232, 240, 0.8);
    backdrop-filter: blur(20px);
    animation: slideUp 0.5s ease-out;
    transition:
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth),
        border-color var(--transition-med);
    will-change: transform;
}

.hero:hover,
.how-it-works:hover,
.cta:hover,
.report-issue:hover {
    transform: translateY(-4px) scale(1.005);
    box-shadow: var(--shadow-hover);
    border-color: rgba(129, 140, 248, 0.5);
}

/* Hero specific */
.hero-content {
    text-align: center;
    margin-bottom: 2.5rem;
}

.hero-content h2 {
    font-size: clamp(1.85rem, 3.5vw, 2.25rem);
    margin-bottom: 1rem;
    color: var(--color-text-main);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.hero-content p {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--color-text-muted);
    max-width: 36rem;
    margin: 0 auto;
    line-height: 1.6;
}

/* =========================================
   Features Grid
========================================= */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: clamp(1.25rem, 2.5vw, 2rem);
}

.feature {
    text-align: left;
    padding: clamp(1.75rem, 3vw, 2rem);
    border-radius: var(--radius-md);
    background: linear-gradient(
        135deg,
        rgba(248, 250, 252, 0.95),
        rgba(241, 245, 249, 0.95)
    );
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition:
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth),
        background var(--transition-smooth),
        border-color var(--transition-med);
    animation: fadeInUp 0.6s ease-out backwards;
    will-change: transform;
}

.feature:nth-child(1) { animation-delay: 0.1s; }
.feature:nth-child(2) { animation-delay: 0.2s; }
.feature:nth-child(3) { animation-delay: 0.3s; }

.feature:hover {
    background: linear-gradient(
        135deg,
        rgba(239, 246, 255, 1),
        rgba(224, 231, 255, 1)
    );
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-medium);
    border-color: rgba(129, 140, 248, 0.7);
}

/* Icon styling */
.icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-md);
    background: var(--color-primary-soft);
    color: var(--color-primary-strong);
    box-shadow: var(--shadow-soft);
    transform: translateY(0);
    transition:
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth),
        background var(--transition-smooth),
        color var(--transition-smooth);
}

.feature:hover .icon {
    transform: translateY(-3px) rotate(-3deg);
    background: var(--color-primary-strong);
    color: var(--color-text-inverse);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.4);
}

.feature h3 {
    margin-bottom: 0.65rem;
    color: var(--color-text-main);
    font-size: clamp(1.1rem, 2vw, 1.2rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.feature p {
    color: var(--color-text-muted);
    font-size: clamp(0.95rem, 1.8vw, 1rem);
    line-height: 1.6;
}

/* =========================================
   How It Works
========================================= */
.how-it-works h2 {
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--color-text-main);
    font-size: clamp(1.75rem, 3vw, 2.15rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: clamp(1.5rem, 3vw, 2.5rem);
}

.step {
    text-align: left;
    padding: clamp(1rem, 2vw, 1.5rem);
    animation: fadeInUp 0.7s ease-out backwards;
}

.step:nth-child(1) { animation-delay: 0.15s; }
.step:nth-child(2) { animation-delay: 0.3s; }
.step:nth-child(3) { animation-delay: 0.45s; }

.step-number {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-text-inverse);
    border-radius: var(--radius-pill);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-medium);
    transition:
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth),
        filter var(--transition-smooth);
}

.step:hover .step-number {
    transform: translateY(-3px) scale(1.05);
    filter: brightness(1.1);
    box-shadow: var(--shadow-hover);
}

.step h3 {
    margin-bottom: 0.65rem;
    color: var(--color-text-main);
    font-size: clamp(1.1rem, 2vw, 1.2rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.step p {
    color: var(--color-text-muted);
    font-size: clamp(0.95rem, 1.8vw, 1rem);
    margin-bottom: 0.65rem;
    line-height: 1.6;
}

.step code {
    display: block;
    margin: 0.85rem 0;
    background: #0f172a;
    color: #6ee7b7;
    padding: 0.9rem 1.1rem;
    border-radius: var(--radius-md);
    font-size: clamp(0.85rem, 1.5vw, 0.95rem);
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.2);
    box-shadow: var(--shadow-soft);
    overflow-x: auto;
}

/* =========================================
   CTA Section
========================================= */
.cta {
    text-align: center;
    animation-delay: 0.2s;
    animation-fill-mode: backwards;
}

.cta h2 {
    margin-bottom: 2rem;
    color: var(--color-text-main);
    font-size: clamp(1.75rem, 3vw, 2.15rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: var(--radius-pill);
    text-decoration: none;
    font-weight: 600;
    font-size: clamp(0.95rem, 1.8vw, 1.05rem);
    margin: 0.5rem;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: none;
    letter-spacing: 0.01em;
    transition:
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth),
        background var(--transition-smooth),
        color var(--transition-smooth),
        border-color var(--transition-smooth);
}

.btn::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 10% 0, rgba(255, 255, 255, 0.6), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-smooth);
    pointer-events: none;
}

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

.btn:active {
    transform: translateY(1px);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-medium);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #4338ca, #4f46e5);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text-main);
    border: 2px solid rgba(203, 213, 225, 0.8);
}

.btn-secondary:hover {
    background: var(--color-surface-alt);
    border-color: rgba(129, 140, 248, 0.9);
    box-shadow: var(--shadow-soft);
}

/* =========================================
   Footer
========================================= */
footer {
    text-align: center;
    color: var(--color-text-inverse);
    padding: clamp(2rem, 4vw, 3rem) 0 clamp(1.5rem, 3vw, 2rem);
    font-size: clamp(0.9rem, 1.6vw, 1rem);
    line-height: 1.8;
}

footer p {
    margin: 0.5rem 0;
}

footer a {
    color: inherit;
    text-decoration: none;
    margin: 0 0.85rem;
    opacity: 0.9;
    transition: 
        opacity var(--transition-med),
        transform var(--transition-med),
        text-shadow var(--transition-med);
    display: inline-block;
}

footer a:hover {
    opacity: 1;
    transform: translateY(-1px);
    text-shadow: 0 2px 8px rgba(255, 255, 255, 0.3);
}

/* =========================================
   Editor Layout / Header
========================================= */
.editor-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-section) clamp(1rem, 2vw, 1.5rem);
    min-height: 100vh;
}

.editor-header {
    background: rgba(255, 255, 255, 0.98);
    padding: clamp(1.5rem, 3vw, 2rem);
    border-radius: var(--radius-lg);
    margin-bottom: clamp(1.5rem, 3vw, 2rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: clamp(1rem, 2vw, 1.5rem);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(226, 232, 240, 0.8);
    animation: slideDown 0.5s ease-out;
}

.editor-header h1 {
    font-size: clamp(1.75rem, 3.5vw, 2.25rem);
    margin: 0;
}

.session-info {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: clamp(0.875rem, 1.6vw, 0.95rem);
    color: var(--color-text-muted);
    font-weight: 500;
}

.session-info span {
    padding: 0.55rem 1rem;
    background: var(--color-surface-alt);
    border-radius: var(--radius-pill);
    border: 1px solid rgba(203, 213, 225, 0.8);
    transition:
        background var(--transition-smooth),
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth);
}

.session-info span:hover {
    background: #e5edf7;
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

/* =========================================
   Loading / Status
========================================= */
.loading {
    text-align: center;
    color: var(--color-text-inverse);
    padding: clamp(3rem, 5vw, 4rem) 1rem;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(255, 255, 255, 0.25);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1.25rem;
}

.error-message,
.warning-message {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-lg);
    padding: clamp(1.75rem, 3vw, 2.5rem);
    text-align: center;
    max-width: 640px;
    margin: clamp(1.5rem, 3vw, 2rem) auto;
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.error-message h2 {
    color: #dc2626;
    margin-bottom: 0.85rem;
    font-size: clamp(1.4rem, 2.5vw, 1.7rem);
}

.warning-message h2 {
    color: #d97706;
    margin-bottom: 0.85rem;
    font-size: clamp(1.4rem, 2.5vw, 1.7rem);
}

.error-message p,
.warning-message p {
    font-size: clamp(0.95rem, 1.8vw, 1.05rem);
    line-height: 1.6;
    margin: 0.5rem 0;
}

.warning-message code {
    display: block;
    margin: 1.25rem 0 0.5rem;
    padding: 1rem 1.25rem;
    background: #f8fafc;
    color: #0f172a;
    border-radius: var(--radius-md);
    border: 1px solid rgba(203, 213, 225, 0.8);
    font-size: clamp(0.85rem, 1.5vw, 0.95rem);
}

/* =========================================
   Editor Content / Tabs
========================================= */
#editor-content {
    background: rgba(255, 255, 255, 0.98);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.8);
    animation: slideUp 0.5s ease-out;
}

.editor-nav {
    display: flex;
    background: var(--color-surface-alt);
    border-bottom: 2px solid rgba(226, 232, 240, 0.8);
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(203, 213, 225, 0.5) transparent;
}

.editor-nav::-webkit-scrollbar {
    height: 4px;
}

.editor-nav::-webkit-scrollbar-track {
    background: transparent;
}

.editor-nav::-webkit-scrollbar-thumb {
    background: rgba(203, 213, 225, 0.5);
    border-radius: var(--radius-pill);
}

.tab {
    padding: clamp(0.9rem, 2vw, 1.1rem) clamp(1.5rem, 3vw, 2rem);
    background: none;
    border: none;
    cursor: pointer;
    font-size: clamp(0.9rem, 1.6vw, 1rem);
    font-weight: 600;
    color: var(--color-text-muted);
    transition:
        background var(--transition-smooth),
        color var(--transition-smooth);
    position: relative;
    white-space: nowrap;
}

.tab::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #4f46e5, #6366f1);
    transform: translateX(-50%);
    border-radius: var(--radius-pill);
    transition: width var(--transition-smooth);
}

.tab:hover {
    background: rgba(229, 237, 247, 0.8);
    color: var(--color-text-main);
}

.tab:hover::after {
    width: 80%;
}

.tab.active {
    color: var(--color-primary-strong);
    background: var(--color-surface);
}

.tab.active::after {
    width: 100%;
}

.editor-panels {
    padding: clamp(1.75rem, 3vw, 2.5rem);
    min-height: 420px;
}

.panel {
    display: none;
}

.panel.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

.panel h2 {
    font-size: clamp(1.5rem, 2.5vw, 1.85rem);
    margin-bottom: 1.5rem;
    color: var(--color-text-main);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* =========================================
   Form Elements
========================================= */
.form-group {
    margin-bottom: clamp(1.5rem, 2.5vw, 2rem);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.65rem;
    color: var(--color-text-main);
    font-size: clamp(0.95rem, 1.7vw, 1rem);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: clamp(0.85rem, 1.8vw, 1rem) clamp(1rem, 2vw, 1.25rem);
    border: 2px solid rgba(226, 232, 240, 0.9);
    border-radius: var(--radius-md);
    font-size: clamp(0.95rem, 1.7vw, 1rem);
    font-family: inherit;
    transition:
        border-color var(--transition-smooth),
        box-shadow var(--transition-smooth),
        background var(--transition-smooth),
        transform var(--transition-smooth);
    background: var(--color-surface);
}

.form-group input:hover,
.form-group textarea:hover,
.form-group select:hover {
    border-color: rgba(203, 213, 225, 0.95);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    transform: translateY(-1px);
}

.form-group textarea {
    font-family: "SF Mono", Menlo, Monaco, "Courier New", monospace;
    resize: vertical;
    line-height: 1.7;
    min-height: 160px;
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--color-text-soft);
    font-size: clamp(0.85rem, 1.5vw, 0.9rem);
    line-height: 1.5;
}

/* Helper text */
.info-text {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    font-size: clamp(0.95rem, 1.7vw, 1rem);
    line-height: 1.6;
}

.placeholder {
    color: #a0aec0;
    font-style: italic;
    text-align: center;
    padding: clamp(2rem, 4vw, 3rem) 1rem;
    font-size: clamp(0.95rem, 1.7vw, 1rem);
}

/* Editor footer */
.editor-footer {
    padding: clamp(1.25rem, 2.5vw, 1.75rem) clamp(1.75rem, 3vw, 2.5rem);
    background: var(--color-surface-alt);
    display: flex;
    gap: clamp(0.75rem, 1.5vw, 1rem);
    justify-content: flex-end;
    flex-wrap: wrap;
    border-top: 2px solid rgba(226, 232, 240, 0.9);
}

.editor-footer .btn {
    font-size: clamp(0.95rem, 1.7vw, 1rem);
    padding: clamp(0.85rem, 1.8vw, 1rem) clamp(1.75rem, 3vw, 2.25rem);
}

.editor-footer .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
    filter: grayscale(0.5);
}

/* =========================================
   Report Issue
========================================= */
.report-issue h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--color-text-main);
    font-size: clamp(1.6rem, 2.8vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

#reportForm {
    max-width: 680px;
    margin: 0 auto;
}

#reportForm .form-group {
    margin-bottom: clamp(1.25rem, 2.5vw, 1.75rem);
}

#reportForm input,
#reportForm textarea,
#reportForm select {
    width: 100%;
    padding: clamp(0.85rem, 1.8vw, 1rem) clamp(1rem, 2vw, 1.25rem);
    border: 2px solid rgba(226, 232, 240, 0.9);
    border-radius: var(--radius-md);
    font-size: clamp(0.95rem, 1.7vw, 1rem);
    font-family: inherit;
    background: var(--color-surface);
    transition:
        border-color var(--transition-smooth),
        box-shadow var(--transition-smooth),
        background var(--transition-smooth);
}

#reportForm input:focus,
#reportForm textarea:focus,
#reportForm select:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

#reportForm textarea {
    min-height: 180px;
    resize: vertical;
    line-height: 1.7;
}

#reportForm button {
    width: 100%;
}

.report-status {
    margin-top: 1rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    font-size: clamp(0.9rem, 1.6vw, 0.95rem);
    display: none;
}

.report-status.success {
    background: #d1fae5;
    color: #065f46;
    display: block;
    border: 2px solid #6ee7b7;
}

.report-status.error {
    background: #fee2e2;
    color: #991b1b;
    display: block;
    border: 2px solid #fca5a5;
}

/* =========================================
   Responsive
========================================= */
@media (max-width: 900px) {
    .editor-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .features,
    .steps {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .container {
        padding: 1.5rem 1rem;
    }
    
    header {
        margin-bottom: 2rem;
        padding: 1rem 0;
    }
}

@media (max-width: 768px) {
    body {
        padding: 0.5rem;
    }

    header h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
        margin-bottom: 0.5rem;
    }
    
    .subtitle {
        font-size: clamp(1rem, 2.5vw, 1.2rem);
    }

    .hero,
    .how-it-works,
    .cta,
    .report-issue {
        padding: 1.5rem 1.25rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-content h2 {
        font-size: clamp(1.5rem, 5vw, 1.85rem);
        margin-bottom: 0.75rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .features {
        gap: 1.25rem;
    }
    
    .feature {
        padding: 1.25rem 1rem;
    }
    
    .icon {
        width: 3rem;
        height: 3rem;
        font-size: 2rem;
        margin-bottom: 0.75rem;
    }
    
    .steps {
        gap: 1.5rem;
    }
    
    .step {
        padding: 1rem;
    }
    
    .step-number {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    .step code {
        font-size: 0.85rem;
        padding: 0.75rem 0.9rem;
        word-break: break-all;
    }

    .editor-nav {
        flex-wrap: nowrap;
    }

    .tab {
        padding: 0.85rem 1.25rem;
        flex-shrink: 0;
        font-size: 0.9rem;
    }

    .editor-panels {
        padding: 1.25rem 1rem;
    }
    
    .btn {
        padding: 0.85rem 1.5rem;
        font-size: 0.95rem;
        margin: 0.35rem;
    }
    
    .editor-footer {
        justify-content: stretch;
        padding: 1rem 1.25rem;
    }
    
    .editor-footer .btn {
        flex: 1;
        min-width: 120px;
    }
    
    .cta h2 {
        font-size: clamp(1.5rem, 4vw, 1.85rem);
        margin-bottom: 1.5rem;
    }
    
    #reportForm {
        padding: 0;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0.25rem;
    }
    
    .container {
        padding: 1rem 0.5rem;
    }
    
    header {
        padding: 0.75rem 0;
        margin-bottom: 1.5rem;
    }
    
    header h1 {
        font-size: 1.65rem;
        line-height: 1.2;
    }
    
    .subtitle {
        font-size: 0.95rem;
        line-height: 1.4;
    }
    
    .hero,
    .how-it-works,
    .cta,
    .report-issue {
        padding: 1.25rem 1rem;
        margin-bottom: 1.25rem;
        border-radius: 12px;
    }
    
    .hero-content h2 {
        font-size: 1.4rem;
    }
    
    .feature h3,
    .step h3 {
        font-size: 1.05rem;
    }
    
    .feature p,
    .step p {
        font-size: 0.9rem;
    }
    
    .btn {
        width: 100%;
        margin: 0.25rem 0;
        padding: 0.9rem 1.25rem;
    }
    
    code {
        font-size: 0.85em;
        padding: 0.2rem 0.5rem;
        word-break: break-word;
    }
    
    .step code {
        font-size: 0.8rem;
        padding: 0.7rem 0.8rem;
    }
    
    footer {
        padding: 1.5rem 0 1rem;
        font-size: 0.85rem;
    }
    
    footer p {
        margin: 0.35rem 0;
    }
    
    footer a {
        margin: 0 0.5rem;
        display: inline-block;
    }
}

/* =========================================
   Help Page Specific Styles
========================================= */
.how-it-works h3 {
    font-size: clamp(1.15rem, 2.2vw, 1.35rem);
    margin-top: 2rem;
    margin-bottom: 0.85rem;
    color: var(--color-text-main);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.how-it-works p {
    margin-bottom: 0.85rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

.how-it-works ul {
    margin: 1rem 0 1.5rem 1.5rem;
    line-height: 1.8;
    color: var(--color-text-muted);
}

.how-it-works li {
    margin-bottom: 0.5rem;
}

.how-it-works pre {
    background: #0f172a;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1rem 0 1.5rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.how-it-works pre code {
    background: transparent;
    padding: 0;
    border: none;
    box-shadow: none;
    color: #6ee7b7;
    font-size: clamp(0.85rem, 1.5vw, 0.9rem);
}

.how-it-works table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.how-it-works th {
    padding: 1rem 1.25rem;
    text-align: left;
    background: var(--color-surface-alt);
    font-weight: 600;
    color: var(--color-text-main);
    font-size: clamp(0.95rem, 1.7vw, 1rem);
    border-bottom: 2px solid rgba(226, 232, 240, 0.9);
}

.how-it-works td {
    padding: 1rem 1.25rem;
    color: var(--color-text-muted);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    font-size: clamp(0.9rem, 1.6vw, 0.95rem);
}

.how-it-works tr:last-child td {
    border-bottom: none;
}

.how-it-works tr:hover {
    background: rgba(241, 245, 249, 0.5);
}

.how-it-works td code {
    font-size: 0.9em;
}

/* =========================================
   Utility Classes
========================================= */
.text-center {
    text-align: center;
}

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

::-moz-selection {
    background: rgba(99, 102, 241, 0.3);
    color: var(--color-text-main);
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 3px solid rgba(99, 102, 241, 0.5);
    outline-offset: 2px;
}

/* =========================================
   Navigation Bar
========================================= */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    box-shadow: var(--shadow-sm);
    animation: slideDown 0.4s ease-out;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 3vw, 2rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 64px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text-main);
    font-weight: 700;
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    transition: transform var(--transition-smooth);
}

.nav-logo:hover {
    transform: translateY(-1px);
}

.logo-icon {
    font-size: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: 
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth);
}

.nav-logo:hover .logo-icon {
    transform: rotate(-5deg) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.logo-text {
    font-family: var(--font-sans);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: clamp(0.5rem, 1.5vw, 1rem);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: clamp(0.95rem, 1.6vw, 1rem);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition:
        color var(--transition-base),
        background var(--transition-base),
        transform var(--transition-base);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transform: translateX(-50%);
    transition: width var(--transition-smooth);
}

.nav-link:hover {
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.08);
    transform: translateY(-1px);
}

.nav-link:hover::after {
    width: 80%;
}

.nav-link:active {
    transform: translateY(0);
}

/* =========================================
   Gradient Utility Classes
========================================= */
.gradient-purple {
    background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 100%);
}

.gradient-blue {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
}

.gradient-green {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
}

/* =========================================
   Feature Color Variants
========================================= */
.feature-purple {
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(167, 139, 250, 0.3);
}

.feature-purple:hover {
    background: linear-gradient(135deg, rgba(167, 139, 250, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    border-color: rgba(139, 92, 246, 0.5);
}

.feature-purple .icon {
    background: rgba(167, 139, 250, 0.2);
    color: #7c3aed;
}

.feature-purple:hover .icon {
    background: #8b5cf6;
    color: white;
}

.feature-blue {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1) 0%, rgba(59, 130, 246, 0.1) 100%);
    border: 1px solid rgba(96, 165, 250, 0.3);
}

.feature-blue:hover {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
    border-color: rgba(59, 130, 246, 0.5);
}

.feature-blue .icon {
    background: rgba(96, 165, 250, 0.2);
    color: #1d4ed8;
}

.feature-blue:hover .icon {
    background: #3b82f6;
    color: white;
}

.feature-green {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    border: 1px solid rgba(52, 211, 153, 0.3);
}

.feature-green:hover {
    background: linear-gradient(135deg, rgba(52, 211, 153, 0.15) 0%, rgba(16, 185, 129, 0.15) 100%);
    border-color: rgba(16, 185, 129, 0.5);
}

.feature-green .icon {
    background: rgba(52, 211, 153, 0.2);
    color: #047857;
}

.feature-green:hover .icon {
    background: #10b981;
    color: white;
}

/* =========================================
   Editor Access Section
========================================= */
.editor-access {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border: 2px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-card);
    margin: clamp(2rem, 4vw, 3rem) 0;
    text-align: center;
}

.editor-access h2 {
    font-size: clamp(1.75rem, 3vw, 2.15rem);
    margin-bottom: 1rem;
    color: var(--color-text-main);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.editor-access p {
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    font-size: clamp(1rem, 1.8vw, 1.1rem);
}

.code-input-container {
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.code-input-container input {
    flex: 1;
    min-width: 200px;
    padding: 1rem 1.5rem;
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-md);
    font-size: clamp(1rem, 1.8vw, 1.1rem);
    font-family: var(--font-mono);
    font-weight: 600;
    background: rgba(255, 255, 255, 0.8);
    transition:
        border-color var(--transition-smooth),
        box-shadow var(--transition-smooth),
        transform var(--transition-smooth);
}

.code-input-container input:hover {
    border-color: rgba(99, 102, 241, 0.5);
}

.code-input-container input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.code-input-container button {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: clamp(1rem, 1.8vw, 1.05rem);
    cursor: pointer;
    transition:
        transform var(--transition-smooth),
        box-shadow var(--transition-smooth);
    box-shadow: var(--shadow-md);
}

.code-input-container button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.code-input-container button:active {
    transform: translateY(0);
}

/* =========================================
   Footer Redesign
========================================= */
.main-footer {
    background: rgba(255, 255, 255, 0.95);
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    margin-top: clamp(3rem, 5vw, 4rem);
    padding: clamp(2rem, 4vw, 3rem) 0 clamp(1rem, 2vw, 1.5rem);
    animation: fadeIn 0.6s ease-out;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 3vw, 2rem);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: clamp(2rem, 4vw, 3rem);
    margin-bottom: clamp(2rem, 3vw, 2.5rem);
}

.footer-section h3 {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    margin-bottom: 1rem;
    color: var(--color-text-main);
    font-weight: 700;
}

.footer-section p,
.footer-section li {
    color: var(--color-text-secondary);
    font-size: clamp(0.95rem, 1.7vw, 1rem);
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
    display: inline-block;
}

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

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding: clamp(1rem, 2vw, 1.5rem) clamp(1rem, 3vw, 2rem) 0;
    border-top: 1px solid rgba(226, 232, 240, 0.6);
    text-align: center;
    color: var(--color-text-secondary);
    font-size: clamp(0.9rem, 1.6vw, 0.95rem);
}

/* =========================================
   Shuffle Title Effect
========================================= */
.shuffle-title {
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-smooth);
    display: inline-block;
    letter-spacing: -0.02em;
}

.shuffle-title:hover {
    color: var(--color-primary);
}

/* =========================================
   Responsive - Navigation
========================================= */
@media (max-width: 768px) {
    .navbar {
        position: relative;
    }
    
    .nav-container {
        flex-wrap: wrap;
        min-height: auto;
        padding: 0.75rem 1rem;
    }
    
    .nav-links {
        width: 100%;
        flex-direction: column;
        gap: 0.5rem;
        margin-top: 0.75rem;
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
        width: 100%;
        text-align: center;
    }
    
    .code-input-container {
        flex-direction: column;
    }
    
    .code-input-container input,
    .code-input-container button {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .navbar {
        box-shadow: none;
        border-bottom: 1px solid rgba(226, 232, 240, 0.5);
    }
    
    .nav-container {
        padding: 0.65rem 0.75rem;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
        font-size: 1.5rem;
    }
    
    .logo-text {
        font-size: 1rem;
    }
    
    .nav-links {
        gap: 0.35rem;
        margin-top: 0.5rem;
    }
    
    .nav-link {
        padding: 0.65rem 0.85rem;
        font-size: 0.9rem;
    }
    
    .editor-access {
        padding: 1.5rem 1rem;
        margin: 1.5rem 0;
    }
}