/* =====================================
   ToolLoom Global Styles
   Production-ready version
===================================== */

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

:root {
    --color-primary: #ffffff;
    --color-secondary: #f8f9fa;
    --color-accent: #10b981;
    --color-accent-hover: #059669;
    --color-text-primary: #1f2937;
    --color-text-secondary: #6b7280;
    --color-border: #e5e7eb;

    --max-width: 1200px;

    --spacing-sm: 12px;
    --spacing-md: 24px;
    --spacing-lg: 60px;

    --border-radius: 12px;
}

/* Base */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont,
        'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-primary);
}

/* Typography */
h1, h2, h3 {
    color: var(--color-text-primary);
}

h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}

h2 {
    font-size: 28px;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 16px;
}

h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
}

p {
    margin-bottom: 16px;
    color: var(--color-text-secondary);
}

/* Links */
a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-accent-hover);
}

/* Header */
header {
    background-color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.logo span {
    color: var(--color-accent);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 28px;
}

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

/* Main container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Hero */
.hero {
    text-align: center;
    padding: 80px var(--spacing-md);
    background-color: var(--color-secondary);
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    max-width: 650px;
    margin: 0 auto 32px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.btn:hover {
    background-color: var(--color-accent-hover);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background-color: var(--color-accent);
    color: #fff;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: 40px;
}

.tool-card {
    background: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: 0.2s ease;
}

.tool-card:hover {
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
    transform: translateY(-4px);
}

/* Tool Layout */
.tool-container {
    max-width: 800px;
    margin: 0 auto;
}

.tool-interface {
    background: var(--color-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: 40px;
}

/* Inputs */
textarea,
input,
select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 16px;
    margin-bottom: 16px;
}

textarea {
    min-height: 150px;
    resize: vertical;
}

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

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.stat-item {
    background: var(--color-primary);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-accent);
}

.stat-label {
    font-size: 14px;
}

/* Output */
.output {
    background: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
    min-height: 100px;
    white-space: pre-wrap;
}

/* QR */
#qrcode {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

/* Content */
.content-section {
    margin-top: 60px;
}

/* Footer */
footer {
    background: var(--color-secondary);
    border-top: 1px solid var(--color-border);
    margin-top: 80px;
    padding: 40px var(--spacing-md);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 28px; }
    .hero h1 { font-size: 36px; }
    .hero p { font-size: 18px; }

    nav ul { gap: 14px; }

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

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

.success-message {
    background: #d1fae5;
    color: #065f46;
    padding: 12px;
    border-radius: 8px;
    margin-top: 16px;
    display: none;
}

.success-message.show {
    display: block;
}