/* ========================================
   ROOT VARIABLES & RESET
======================================== */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(26, 26, 37, 0.8);
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    
    --accent-primary: #8b5cf6;
    --accent-secondary: #06b6d4;
    --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #06b6d4 50%, #10b981 100%);
    
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Typography */
    --font-display: 'Sora', sans-serif;
    --font-mono: 'Space Mono', monospace;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

/* ========================================
   NOISE OVERLAY
======================================== */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ========================================
   CONTAINER & LAYOUT
======================================== */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-lg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* ========================================
   PROGRESS BAR
======================================== */
.progress-container {
    margin-bottom: var(--space-2xl);
}

.progress-bar {
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 20%;
    transition: width var(--transition-slow);
    border-radius: var(--radius-full);
}

.progress-steps {
    display: flex;
    justify-content: space-between;
    gap: var(--space-sm);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    opacity: 0.4;
    transition: opacity var(--transition-base);
}

.step.active {
    opacity: 1;
}

.step.completed {
    opacity: 0.8;
}

.step-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.step-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.step.active .step-label {
    color: var(--text-primary);
}

/* ========================================
   HEADER
======================================== */
.header {
    margin-bottom: var(--space-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

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

.logo-text {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    letter-spacing: 0.3em;
    font-weight: 700;
}

/* ========================================
   MAIN CONTENT
======================================== */
.main-content {
    flex: 1;
}

/* ========================================
   FORM STEPS
======================================== */
.form-step {
    display: none;
    animation: fadeIn 0.5s ease forwards;
}

.form-step.active {
    display: block;
}

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

.step-header {
    margin-bottom: var(--space-2xl);
}

.step-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
}

.step-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

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

.step-description {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
}

/* ========================================
   DOMAIN CHECKER (Step 1)
======================================== */
.domain-checker {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.domain-input-group {
    display: flex;
    flex: 1;
    min-width: 280px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.domain-input-group:focus-within {
    border-color: var(--accent-primary);
}

.domain-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: var(--space-md) var(--space-lg);
    font-size: 1.125rem;
    color: var(--text-primary);
    font-family: var(--font-display);
}

.domain-input::placeholder {
    color: var(--text-muted);
}

.domain-input:focus {
    outline: none;
}

.domain-select {
    background: var(--bg-tertiary);
    border: none;
    border-left: 1px solid var(--border-color);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    color: var(--text-primary);
    font-family: var(--font-mono);
    cursor: pointer;
    min-width: 120px;
}

.domain-select:focus {
    outline: none;
}

.domain-result {
    margin-bottom: var(--space-lg);
}

.result-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.result-card.available {
    border-color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.result-card.taken {
    border-color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.result-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.result-card.available .result-icon {
    background: rgba(16, 185, 129, 0.2);
}

.result-card.taken .result-icon {
    background: rgba(239, 68, 68, 0.2);
}

.result-domain {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

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

.popular-extensions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

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

.extension-tags {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.ext-tag {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
}

.ext-tag:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ========================================
   PROJECT FORM (Step 2)
======================================== */
.project-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input,
.form-select,
.form-textarea {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    color: var(--text-primary);
    font-family: var(--font-display);
    transition: border-color var(--transition-base);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.char-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: right;
    font-family: var(--font-mono);
}

.feature-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.chip {
    cursor: pointer;
}

.chip input {
    display: none;
}

.chip-text {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.chip input:checked + .chip-text {
    background: rgba(139, 92, 246, 0.2);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.chip:hover .chip-text {
    border-color: var(--border-hover);
}

/* ========================================
   REFERENCE SITES (Step 3)
======================================== */
.reference-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.reference-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    animation: slideIn 0.3s ease forwards;
}

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

.reference-thumbnail {
    width: 80px;
    height: 50px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    overflow: hidden;
    flex-shrink: 0;
}

.reference-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reference-info {
    flex: 1;
    min-width: 0;
}

.reference-url {
    font-size: 0.875rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.reference-domain {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.reference-actions {
    display: flex;
    gap: var(--space-sm);
}

.ref-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

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

.ref-btn.delete:hover {
    border-color: var(--error);
    color: var(--error);
}

.add-reference {
    margin-bottom: var(--space-lg);
}

.reference-input-group {
    display: flex;
    gap: var(--space-md);
}

.reference-input {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    color: var(--text-primary);
    font-family: var(--font-display);
    transition: border-color var(--transition-base);
}

.reference-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.reference-input::placeholder {
    color: var(--text-muted);
}

.reference-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

.preview-container {
    margin-top: var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

.preview-header h3 {
    font-size: 0.875rem;
    font-weight: 500;
}

.preview-close {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.preview-close:hover {
    color: var(--text-primary);
}

.preview-content {
    padding: var(--space-lg);
}

.preview-frame {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.preview-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.preview-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

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

/* ========================================
   CONTACT FORM (Step 4)
======================================== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

@media (max-width: 500px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.phone-input-group {
    display: flex;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-base);
}

.phone-input-group:focus-within {
    border-color: var(--accent-primary);
}

.phone-prefix {
    display: flex;
    align-items: center;
    padding: 0 var(--space-md);
    background: var(--bg-tertiary);
    border-right: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.phone-input {
    border: none !important;
    border-radius: 0 !important;
}

.budget-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

@media (max-width: 500px) {
    .budget-options {
        grid-template-columns: 1fr;
    }
}

.budget-option {
    cursor: pointer;
}

.budget-option input {
    display: none;
}

.budget-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    text-align: center;
}

.budget-option:hover .budget-card {
    border-color: var(--border-hover);
}

.budget-option input:checked + .budget-card {
    border-color: var(--accent-primary);
    background: rgba(139, 92, 246, 0.1);
}

.budget-range {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.budget-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ========================================
   SUMMARY (Step 5)
======================================== */
.summary-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.summary-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}

.summary-section {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-section:last-child {
    border-bottom: none;
}

.summary-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.summary-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.summary-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--space-xs);
    line-height: 1.5;
}

.summary-references {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.summary-ref-tag {
    font-size: 0.75rem;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.budget-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--accent-gradient);
    border-radius: var(--radius-full);
    font-weight: 600;
}

.consent-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    cursor: pointer;
    padding: var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.consent-checkbox input {
    display: none;
}

.checkmark {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: all var(--transition-base);
    position: relative;
}

.consent-checkbox input:checked + .checkmark {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.consent-checkbox input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 0.875rem;
    font-weight: 700;
}

.consent-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ========================================
   BUTTONS
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-display);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    text-decoration: none;
}

.btn-icon {
    font-size: 1.125rem;
    transition: transform var(--transition-base);
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
}

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

.btn-primary:hover .btn-icon {
    transform: translateX(4px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-secondary:hover .btn-icon {
    transform: translateX(-4px);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.4);
    transform: translateY(-2px);
}

.btn-check {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    white-space: nowrap;
}

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

.btn-add {
    background: var(--accent-primary);
    color: white;
    white-space: nowrap;
}

.btn-add:hover {
    background: #7c3aed;
}

/* ========================================
   FORM NAVIGATION
======================================== */
.form-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
}

/* ========================================
   MODAL
======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 15, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--space-lg);
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    text-align: center;
    max-width: 400px;
    width: 100%;
    animation: modalIn 0.5s ease forwards;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.success-animation {
    margin-bottom: var(--space-xl);
}

.checkmark-circle {
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.checkmark {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    stroke-width: 2;
    stroke: var(--success);
    stroke-miterlimit: 10;
    animation: fill 0.4s ease-in-out 0.4s forwards, scale 0.3s ease-in-out 0.9s both;
}

.checkmark-circle-bg {
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    stroke-width: 2;
    stroke-miterlimit: 10;
    stroke: var(--success);
    fill: none;
    animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark-check {
    transform-origin: 50% 50%;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    stroke: var(--success);
    stroke-width: 3;
    animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.8s forwards;
}

@keyframes stroke {
    100% {
        stroke-dashoffset: 0;
    }
}

@keyframes scale {
    0%, 100% {
        transform: none;
    }
    50% {
        transform: scale3d(1.1, 1.1, 1);
    }
}

@keyframes fill {
    100% {
        box-shadow: inset 0 0 0 100px var(--bg-tertiary);
    }
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.modal-text {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

/* ========================================
   LOADING OVERLAY
======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 15, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1500;
}

.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.loader-ring {
    width: 48px;
    height: 48px;
    border: 3px solid var(--bg-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

/* ========================================
   FOOTER
======================================== */
.footer {
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========================================
   UTILITIES
======================================== */
.hidden {
    display: none !important;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 640px) {
    .container {
        padding: var(--space-md);
    }
    
    .domain-checker {
        flex-direction: column;
    }
    
    .domain-input-group {
        min-width: 100%;
    }
    
    .btn-check {
        width: 100%;
    }
    
    .form-navigation {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .form-navigation .btn {
        width: 100%;
    }
    
    #prevBtn {
        order: 2;
    }
    
    #nextBtn,
    #submitBtn {
        order: 1;
    }
}