/* 
 * iOS Device Info Collector
 * Modern Dark Theme Stylesheet
 */

/* ===== CSS Reset & Base Styles ===== */
:root {
    /* Color Variables */
    --color-background: #121212;
    --color-surface: #1e1e1e;
    --color-surface-light: #2d2d2d;
    --color-primary: #6b7cff;
    --color-primary-dark: #5663d1;
    --color-accent: #ff7b72;
    --color-text-primary: #e1e1e1;
    --color-text-secondary: #aaaaaa;
    --color-text-tertiary: #7a7a7a;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-success: #4caf50;
    --color-info: #2196f3;
    --color-warning: #ff9800;
    --color-error: #f44336;

    /* Spacing Variables */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Border Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 20px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --font-size-hero: 2.5rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--color-surface-light) var(--color-background);
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-background);
}

::-webkit-scrollbar-thumb {
    background-color: var(--color-surface-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text-tertiary);
}

img {
    max-width: 100%;
    height: auto;
}

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

a:hover, a:focus {
    color: var(--color-accent);
    text-decoration: underline;
}

ul, ol {
    list-style-position: inside;
}

button, .btn {
    cursor: pointer;
    font-family: inherit;
}

input, button, textarea, select {
    font: inherit;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-xxl);
}

h2 {
    font-size: var(--font-size-xl);
}

h3 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-md);
}

/* ===== Layout Components ===== */

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    position: relative;
    z-index: 10;
}

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

.logo h1 {
    font-size: var(--font-size-lg);
    margin-bottom: 0;
}

nav ul {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

nav ul li a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
    font-weight: 500;
}

nav ul li a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-btn span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

/* Main Sections */
main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

section {
    margin-bottom: var(--spacing-xxl);
}

/* Hero Section */
.hero-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-xxl);
    min-height: 70vh;
    position: relative;
}

.hero-content {
    flex: 1;
}

.hero-content h2 {
    font-size: var(--font-size-hero);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cta-group {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* How It Works Section */
.how-section {
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

.how-section h2 {
    margin-bottom: var(--spacing-xl);
}

.steps {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.step {
    flex: 1;
    background-color: var(--color-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    position: relative;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.step-number {
    position: absolute;
    top: -20px;
    left: calc(50% - 20px);
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: var(--font-size-lg);
}

.step-content {
    margin-top: var(--spacing-lg);
}

.step-content h3 {
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    color: var(--color-text-secondary);
}

/* Results Section */
.results-section {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.device-card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.device-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.device-icon {
    background-color: rgba(107, 124, 255, 0.1);
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.device-title {
    text-align: left;
}

.device-title h3 {
    margin-bottom: var(--spacing-xs);
}

.device-model {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.device-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.info-item {
    text-align: left;
    background-color: var(--color-surface-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
}

.info-item label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.copy-field {
    display: flex;
    align-items: center;
}

.copy-field input {
    flex: 1;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-primary);
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.copy-btn {
    background-color: var(--color-primary);
    border: none;
    border-radius: var(--border-radius-sm);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    padding: var(--spacing-sm);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.copy-btn:hover {
    background-color: var(--color-primary-dark);
}

.actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* FAQ Section */
.faq-section {
    padding: var(--spacing-xl) 0;
}

.faq-container {
    margin-top: var(--spacing-lg);
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    padding: var(--spacing-md) 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question h3 {
    margin-bottom: 0;
    font-size: var(--font-size-md);
}

.faq-toggle {
    width: 24px;
    height: 24px;
    position: relative;
}

.faq-toggle::before,
.faq-toggle::after {
    content: '';
    position: absolute;
    background-color: var(--color-text-primary);
    transition: transform var(--transition-fast);
}

.faq-toggle::before {
    width: 100%;
    height: 2px;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
}

.faq-toggle::after {
    width: 2px;
    height: 100%;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.faq-item.active .faq-toggle::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    padding: 0 var(--spacing-md);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: var(--spacing-md);
}

/* Privacy Section */
.privacy-section {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-xxl) 0;
}

.privacy-content {
    margin-top: var(--spacing-lg);
}

.privacy-content ul {
    margin: var(--spacing-md) 0;
    list-style-type: none;
}

.privacy-content li {
    padding-left: var(--spacing-md);
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.privacy-content li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--color-primary);
}

/* Footer */
footer {
    background-color: var(--color-surface);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

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

.footer-links {
    display: flex;
    gap: var(--spacing-xxl);
    flex-wrap: wrap;
}

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-surface-light);
    transition: background-color var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-primary);
}

.copyright {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    border: none;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    color: #ffffff;
    text-decoration: none;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
    text-decoration: none;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--color-surface);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: translateY(0);
}

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

.modal-header h3 {
    margin-bottom: 0;
}

.close-modal {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--color-text-tertiary);
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-lg);
}

.export-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-md);
}

.export-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    background-color: var(--color-surface-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-normal), transform var(--transition-normal);
    cursor: pointer;
}

.export-option:hover {
    border-color: var(--color-primary);
    transform: translateY(-3px);
}

.export-option img {
    margin-bottom: var(--spacing-sm);
}

.export-option span {
    font-size: var(--font-size-sm);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
}

.toast {
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    transform: translateX(120%);
    transition: transform var(--transition-normal);
}

.toast.active {
    transform: translateX(0);
}

.toast-icon {
    margin-right: var(--spacing-md);
}

.toast-message {
    flex: 1;
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    margin-left: var(--spacing-md);
}

.toast-success {
    border-left-color: var(--color-success);
}

.toast-info {
    border-left-color: var(--color-info);
}

.toast-warning {
    border-left-color: var(--color-warning);
}

.toast-error {
    border-left-color: var(--color-error);
}