:root {
    --bg-dark: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --primary-color: #8b5cf6;
    --primary-hover: #7c3aed;
    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);
    --ad-bg: rgba(15, 23, 42, 0.8);
    --ad-border: rgba(255, 255, 255, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

/* Background animated blobs */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, #8b5cf6, transparent 70%);
}

.blob-2 {
    bottom: -10%;
    right: -10%;
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, #3b82f6, transparent 70%);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 10%) scale(1.1); }
}

/* Layout */
.container {
    width: 100%;
    max-width: 900px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    flex: 1;
}

header {
    text-align: center;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, #a78bfa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Glassmorphism Card */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

/* Inputs */
.input-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input[type="text"] {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 1rem 1.25rem;
    border-radius: 12px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    outline: none;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.color-options {
    display: flex;
    gap: 1rem;
}

.color-picker-group {
    flex: 1;
}

.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 12px;
}

input[type="color"] {
    -webkit-appearance: none;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    background: none;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.color-hex {
    font-family: monospace;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* Output Section */
.output-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.qr-placeholder {
    width: 250px;
    height: 250px;
    background: rgba(255, 255, 255, 0.02);
    border: 2px dashed var(--glass-border);
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.qr-placeholder.has-qr {
    border: none;
    background: transparent;
}

canvas {
    border-radius: 12px;
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    max-width: 100%;
    height: auto !important;
}

canvas.show {
    opacity: 1;
    transform: scale(1);
}

.empty-state {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 1rem;
}

.empty-state svg {
    opacity: 0.5;
}

.qr-placeholder.has-qr .empty-state {
    display: none;
}

/* Button */
.primary-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    width: 100%;
    justify-content: center;
}

.primary-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -10px var(--primary-color);
}

.primary-btn:disabled {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Ad Slots */
.ad-slot {
    width: 100%;
    max-width: 728px;
    min-height: 90px;
    background: var(--ad-bg);
    border: 1px dashed var(--ad-border);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    margin: 1rem 0;
}

.ad-label {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.top-ad {
    margin-top: 2rem;
}

.bottom-ad {
    margin-bottom: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .glass-panel {
        grid-template-columns: 1fr;
        padding: 1.5rem;
        gap: 2rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .ad-slot {
        max-width: 320px;
        min-height: 100px;
    }
}