:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --border-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #0284c7;
    --highlight: #f59e0b;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-header {
    background-color: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-title {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.logo-badge {
    font-size: 0.75rem;
    background: #0369a1;
    color: #e0f2fe;
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-weight: 600;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.95rem;
    transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
    font-weight: 600;
}

.main-content {
    flex: 1;
    padding-top: 2rem;
    padding-bottom: 3rem;
}

.welcome-card {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem 2rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.status-badge {
    display: inline-block;
    background-color: #854d0e;
    color: #fef08a;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    margin-bottom: 1rem;
}

.welcome-heading {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.75rem;
}

.highlight-prov {
    color: var(--accent);
}

.highlight-num {
    color: var(--highlight);
    font-size: 2rem;
    font-weight: 800;
}

.welcome-sub {
    color: var(--text-secondary);
    font-size: 1rem;
}

.section-title {
    font-size: 1.35rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.tool-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.tool-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.tool-intro {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.input-row {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

input[type="text"],
input[type="number"],
input[type="password"],
textarea {
    width: 100%;
    background-color: #0f172a;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem 0.85rem;
    border-radius: 6px;
    font-size: 0.95rem;
    outline: none;
    font-family: monospace;
}

input:focus,
textarea:focus {
    border-color: var(--accent);
}

.btn {
    background-color: #0284c7;
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    white-space: nowrap;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.15s ease;
}

.btn:hover {
    background-color: #0369a1;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.75rem 0;
}

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

.hash-list {
    margin-top: 1rem;
}

.hash-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-family: monospace;
    font-size: 0.9rem;
}

.hash-tag {
    color: var(--accent);
    font-weight: 700;
    width: 5rem;
}

.hash-val {
    word-break: break-all;
    color: var(--text-secondary);
}

.tool-code-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    background-color: #0f172a;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

code {
    font-family: monospace;
    color: var(--accent);
    font-size: 0.95rem;
}

/* My IP page styles */
.myip-card {
    max-width: 640px;
    margin: 1rem auto 2rem;
}

.ip-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.25rem 0;
}

.ip-val {
    font-size: 2rem;
    font-weight: 800;
    font-family: monospace;
    color: var(--accent);
}

.myip-desc {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.myip-cmd {
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.myip-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Login page styles */
.login-card {
    max-width: 440px;
    margin: 2rem auto;
}

.login-error {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 0.6rem 0.85rem;
    border-radius: 6px;
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: auto;
}

.site-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s;
}

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

.error-page {
    justify-content: center;
    align-items: center;
}

.error-box {
    text-align: center;
    padding: 4rem 1rem;
}

.error-box h1 {
    font-size: 4rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.error-box p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}