:root {
    --bg-color: #030305;
    --card-bg: rgba(13, 13, 18, 0.7);
    --accent-color: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --accent-gradient: linear-gradient(135deg, #4f46e5, #9333ea, #ec4899);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.08);
    --input-focus: rgba(79, 70, 229, 0.3);
    --success: #10b981;
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 0;
}

/* Background Effects */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 50% 50%, #0a0a0f 0%, #030305 100%);
}

.blob {
    position: absolute;
    width: 500px;
    height: 500px;
    filter: blur(80px);
    opacity: 0.15;
    border-radius: 50%;
    animation: floating 25s infinite alternate;
}

.blob-1 {
    background: #4f46e5;
    top: -100px;
    left: -100px;
}

.blob-2 {
    background: #9333ea;
    bottom: -100px;
    right: -100px;
    animation-delay: -5s;
}

.blob-3 {
    background: #db2777;
    top: 30%;
    left: 40%;
    opacity: 0.1;
    animation-delay: -10s;
}

@keyframes floating {
    0% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(30px, -50px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }

    100% {
        transform: translate(0, 0) scale(1);
    }
}

.container {
    max-width: 850px;
    width: 95%;
    margin: 0 auto;
}

/* Typography */
header {
    margin-bottom: 3.5rem;
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

header h1 {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    letter-spacing: -2px;
    line-height: 1;
}

.accent {
    background: var(--accent-gradient);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 5s linear infinite;
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

header p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 500px;
    margin: 0 auto;
    line-height: 1.6;
}

/* Main Card */
.generator-card {
    background: var(--card-bg);
    backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 32px;
    padding: 3rem;
    box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.8), inset 0 1px 1px rgba(255, 255, 255, 0.05);
    margin-bottom: 2rem;
    animation: scaleIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.input-main-wrap {
    background: rgba(0, 0, 0, 0.4);
    padding: 8px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    display: flex;
    gap: 8px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
}

.input-main-wrap:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

input[type="url"] {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: white;
    padding: 15px 20px;
    font-size: 1.1rem;
    font-weight: 500;
}

button#verifyBtn {
    background: var(--accent-gradient);
    color: white;
    border: none;
    padding: 0 30px;
    border-radius: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

button#verifyBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px var(--accent-glow);
}

/* Config Tabs Layout */
.config-tabs-nav {
    display: flex;
    gap: 5px;
    margin-bottom: 2rem;
    background: rgba(0, 0, 0, 0.2);
    padding: 5px;
    border-radius: 12px;
}

.config-tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 12px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.config-tab-btn.active {
    background: rgba(255, 255, 255, 0.08);
    color: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.config-section {
    display: none;
    animation: fadeIn 0.4s ease;
}

.config-section.active {
    display: block;
}

/* Form Elements */
.config-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.field-label {
    display: block;
    margin-bottom: 0.7rem;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.input-field {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 14px;
    border-radius: 12px;
    width: 100%;
    outline: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.input-field:focus {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-color);
}

/* Advanced Features List */
.feature-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.2);
}

.feature-item input[type="checkbox"] {
    width: 22px;
    height: 22px;
    accent-color: var(--accent-color);
    cursor: pointer;
}

.feature-info {
    flex: 1;
}

.feature-title {
    display: block;
    font-weight: 700;
    margin-bottom: 2px;
    font-size: 0.95rem;
}

.feature-desc {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Custom UI Toggle */
.toggle-switch {
    width: 44px;
    height: 24px;
    background: #334155;
    border-radius: 12px;
    position: relative;
    transition: 0.3s;
}

input:checked+.toggle-switch {
    background: var(--success);
}

.toggle-switch::after {
    content: '';
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: 0.3s;
}

input:checked+.toggle-switch::after {
    left: 23px;
}

.hidden {
    display: none !important;
}

/* Fix Terminal Console UI */
.terminal-view {
    background: #000;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    height: 250px;
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.5);
    padding: 15px;
    font-family: 'Fira Code', monospace;
    font-size: 0.8rem;
    color: #10b981;
    overflow-y: auto;
    line-height: 1.5;
}

.terminal-view div {
    margin-bottom: 4px;
    white-space: pre-wrap;
    word-break: break-all;
}

.terminal-view div:before {
    content: "> ";
    opacity: 0.5;
}

/* Progress bar alignment */
.loader-container {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.loader {
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Tool Buttons Color Fix */
.primary-btn {
    background: var(--accent-gradient);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 14px;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s ease;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px var(--accent-glow);
}

/* Success Components */
.success-icon {
    font-size: 3rem;
    text-align: center;
    display: block;
}

.qr-container {
    text-align: center;
    background: white;
    padding: 20px;
    border-radius: 20px;
    margin-bottom: 2rem;
    color: #000;
}

.qr-container p {
    font-weight: 700;
    margin-bottom: 10px;
}

.qr-container img {
    max-width: 200px;
    margin: 0 auto;
}

.btn-download {
    background: var(--success);
    color: white;
    text-decoration: none;
    text-align: center;
    padding: 1.2rem;
    border-radius: 14px;
    font-weight: 800;
    transition: all 0.3s ease;
}

.code-block {
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 15px;
    position: relative;
    margin-bottom: 10px;
}

.code-block pre {
    overflow-x: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
}

/* Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Responsive & TWA Optimization */
@media (max-width: 768px) {
    body {
        padding: 20px 0;
    }

    header h1 {
        font-size: 2.4rem;
        letter-spacing: -1px;
    }

    header p {
        font-size: 1rem;
        padding: 0 15px;
    }

    .generator-card {
        padding: 1.5rem;
        border-radius: 20px;
        margin-bottom: 1.5rem;
    }

    .input-main-wrap {
        flex-direction: column;
        background: none;
        border: none;
        padding: 0;
        gap: 12px;
    }

    input[type="url"] {
        background: rgba(0, 0, 0, 0.4);
        border: 1px solid var(--glass-border);
        border-radius: 14px;
        width: 100%;
        padding: 16px;
    }

    button#verifyBtn {
        width: 100%;
        padding: 16px;
    }

    .config-tabs-nav {
        overflow-x: auto;
        white-space: nowrap;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        padding: 8px 4px;
        scrollbar-width: none;
    }
    .config-tabs-nav::-webkit-scrollbar { display: none; }

    .config-tab-btn {
        flex: none;
        padding: 10px 18px;
    }

    .config-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .input-field {
        padding: 12px;
    }

    .terminal-view {
        height: 180px;
        font-size: 0.75rem;
    }

    .helper-tabs {
        padding: 1.5rem;
        margin-top: 2rem;
    }

    .tabs {
        display: flex;
        overflow-x: auto;
        gap: 8px;
        padding-bottom: 8px;
        scrollbar-width: none;
    }
    .tabs::-webkit-scrollbar { display: none; }
    
    .tab-btn {
        white-space: nowrap;
        flex: none;
    }
}

/* Safe areas for Android devices with notches/gestures */
@supports (padding: env(safe-area-inset-bottom)) {
    body {
        padding-bottom: calc(40px + env(safe-area-inset-bottom));
    }
    .container {
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
}