:root {
    --bg-main: #0f111a;
    --bg-card: #1a1d2e;
    --text-primary: #ffffff;
    --text-secondary: #a0a4b8;
    --accent: #00f2ea;
    --accent-hover: #00c9c2;
    --border-color: #2e3247;
    --container-width: 900px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
}

.hero-title {
    min-height: 2.6em; 
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-bottom: 30px; 
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-out {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
    filter: blur(10px);
}
.fade-in {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 20px;
}

.text-accent { color: var(--accent); }
.text-secondary { color: var(--text-secondary); }


.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-outline {
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    background: transparent;
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-outline[data-state="connected"] {
    color: #00ff88;
    border-color: #00ff88;
}
.btn-outline[data-state="connected"]:hover {
    color: #33ff9d;
    border-color: #33ff9d;
    background: rgba(0, 255, 136, 0.1);
}

.btn-outline[data-state="error"] {
    color: #ff4a4a;
    border-color: #ff4a4a;
}
.btn-outline[data-state="error"]:hover {
    color: #ff7070;
    border-color: #ff7070;
    background: rgba(255, 74, 74, 0.1);
}

.btn-full { width: 100%; }


.site-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 40px;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}


.hero-section {
    text-align: center;
    padding: 60px 0 100px;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.feature-card h3 { margin-bottom: 15px; }

.app-card {
    background-color: var(--bg-card);
    max-width: 500px;
    margin: 0 auto;
    padding: 40px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.app-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    text-align: center;
    padding: 15px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
    margin-bottom: -2px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.form-group { margin-bottom: 25px; }

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

.form-textarea {
    resize: vertical;
    height: 120px;
}

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

.hash-result-area {
    background: rgba(0, 242, 234, 0.1);
    padding: 15px;
    border-radius: 6px;
    border: 1px dashed var(--accent);
    margin-bottom: 25px;
    word-break: break-all;
    font-family: monospace;
    font-size: 0.9rem;
}


.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 0.9rem;
}

.data-table th {
    text-align: left;
    padding: 12px;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.data-table td {
    padding: 15px 12px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.status-badge {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
}

.status-hidden { background: rgba(160, 164, 184, 0.2); color: var(--text-secondary); }
.status-revealed { background: rgba(0, 242, 234, 0.2); color: var(--accent); }

.mono { font-family: monospace; color: var(--text-secondary); }

.corner-image,
.corner-image-mirrored {
    position: fixed;
    bottom: 20px;
    z-index: -1;
    pointer-events: none;
}
.corner-image {
    right: 20px;
}
.corner-image-mirrored {
    left: 20px;
}
.corner-image img,
.corner-image-mirrored img {
    width: 180px;
    height: auto;
}
.corner-image-mirrored img {
    transform: scaleX(-1);
}


.underscoredA {
    color: var(--accent);
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
}
.underscoredA::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 1px;
    background: rgba(0, 255, 255, 0.5);
    transform: scaleX(0);
    transition: transform 0.3s ease;
    transform-origin: left;
}
.underscoredA:hover {
    color: var(--accent-hover);
}
.underscoredA:hover::after {
    transform: scaleX(1);
}


.site-footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}