:root {
    --bg-color: #0d0f1a;
    --card-bg: rgba(25, 28, 45, 0.4);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #9da3ba;
    --accent-glow: rgba(115, 96, 255, 0.6);
    --accent-glow-2: rgba(255, 71, 151, 0.5);
    --primary: #7360ff;
    --primary-hover: #8675ff;
    --surface-mixed: rgba(43, 44, 62, 0.7);
    --success: #1cdb82;
    --error: #ff476e;
    --font-main: 'Outfit', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    justify-content: center;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 10s infinite alternate ease-in-out;
}

.orb-1 {
    width: 300px;
    height: 300px;
    background: var(--accent-glow);
    top: -50px;
    left: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-glow-2);
    bottom: -100px;
    right: -150px;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Layout */
.app-container {
    width: 100%;
    max-width: 480px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    z-index: 10;
}

.app-header {
    text-align: center;
    margin-bottom: 0.5rem;
}

.app-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #fff 0%, #b2adff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.app-header p {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 300;
}

/* Toggle */
.mode-toggle {
    display: flex;
    background: rgba(0,0,0,0.3);
    border-radius: 100px;
    padding: 6px;
    border: 1px solid var(--card-border);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    padding: 0.8rem;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.tab-btn.active {
    background: var(--surface-mixed);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* Views & Cards */
.view-section {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.view-section.active {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

/* Inputs & Forms */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.input-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

textarea {
    width: 100%;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1.1rem;
    padding: 1rem;
    resize: vertical;
    outline: none;
    transition: all 0.2s;
}

textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(115, 96, 255, 0.2);
}

/* Buttons */
button {
    font-family: inherit;
    cursor: pointer;
    outline: none;
    transition: all 0.2s;
}

.primary-btn, .secondary-btn {
    width: 100%;
    padding: 1.1rem;
    border-radius: 14px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
}

.primary-btn {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(115, 96, 255, 0.4);
}

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

.primary-btn:active {
    transform: translateY(0);
}

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

.secondary-btn:hover {
    background: rgba(255,255,255,0.05);
}

.row {
    display: flex;
    gap: 1rem;
}

.full-width {
    flex: 1;
}

/* QR Display */
.qr-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.section-title {
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
}

#qr-canvas {
    background: #ffffff;  /* White background needed for adequate contrast */
    border-radius: 20px;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.helper-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
}

/* Scanner */
#scanner-container {
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    border: 2px solid var(--card-border);
    margin-bottom: 1.5rem;
    background: #000;
}

#qr-reader {
    width: 100%;
    margin-bottom: -5px; /* Fix html5-qrcode whitespace artifact */
}

/* Override html5-qrcode styles */
#qr-reader__dashboard_section_csr button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 600;
    margin: 5px;
    cursor: pointer;
}
#qr-reader__dashboard_section_swaplink {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}
#qr-reader__dashboard_section_csr span {
    color: var(--text-secondary) !important;
}

/* Received Data Box */
.received-data-box {
    background: rgba(0,0,0,0.3);
    border-radius: 12px;
    padding: 1.2rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary);
}

.received-data-box .label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.data-text {
    font-size: 1.1rem;
    line-height: 1.4;
    word-break: break-word;
}

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