:root {
    --primary-color: #2563eb;
    --primary-gradient: linear-gradient(135deg, #2563eb, #4f46e5);
    --bg-color: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.8);
    --border-subtle: rgba(226, 232, 240, 0.6);
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.04);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.08);
    --radius: 16px;
    --font-family: 'Noto Sans SC', -apple-system, system-ui, sans-serif;

    --success-bg: rgba(16, 185, 129, 0.1);
    --success-text: #059669;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --warning-text: #d97706;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --danger-text: #dc2626;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    /* Clean futuristic background */
    background: radial-gradient(circle at 0% 0%, #ebf8ff 0%, transparent 40%),
        radial-gradient(circle at 100% 100%, #eff6ff 0%, transparent 40%),
        #f8fafc;
}

/* Subtle Aurora Animation */
body::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(60deg, rgba(37, 99, 235, 0.03) 0%, rgba(79, 70, 229, 0.03) 100%);
    animation: aurora 20s infinite linear;
    z-index: -1;
    pointer-events: none;
}

@keyframes aurora {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.app-container {
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
    padding: 30px;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: relative;
    z-index: 1;
}

/* Header */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 10px;
}

.main-header h1 {
    font-size: 28px;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.status-badge {
    display: flex;
    align-items: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--success-text);
    background: white;
    padding: 8px 16px;
    border-radius: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-subtle);
}

.status-badge .dot {
    width: 6px;
    height: 6px;
    background-color: var(--success-text);
    border-radius: 50%;
    margin-right: 8px;
    box-shadow: 0 0 8px var(--success-text);
}

/* Layout */
.main-content {
    flex: 1;
    min-height: 0;
}

.split-layout {
    display: flex;
    gap: 30px;
    height: 100%;
}

.panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-subtle);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.panel:hover {
    box-shadow: var(--shadow-hover);
    border-color: rgba(255, 255, 255, 1);
}

.input-panel {
    flex: 1;
    max-width: 420px;
}

.results-panel {
    flex: 2.5;
}

.panel-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-left {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.panel-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Input Section */
.input-wrapper {
    flex: 1;
    padding: 24px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.5), transparent);
}

textarea {
    width: 100%;
    height: 100%;
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 16px;
    font-family: 'SF Mono', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.6);
    resize: none;
    outline: none;
    transition: all 0.3s;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02);
}

textarea:focus {
    background: white;
    border-color: #2563eb;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.action-area {
    padding: 24px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    gap: 12px;
}

.primary-btn {
    width: 100%;
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.primary-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

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

.primary-btn:disabled {
    opacity: 0.7;
    cursor: wait;
    transform: none;
}

/* Results Section */
.status-summary {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.icon-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    background: white;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.icon-btn:hover:not(:disabled) {
    border-color: #2563eb;
    color: #2563eb;
    background: #f8fafc;
}

.icon-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.results-table-header {
    display: grid;
    grid-template-columns: 2fr 120px 200px 140px;
    padding: 16px 30px;
    background: rgba(248, 250, 252, 0.8);
    border-bottom: 1px solid var(--border-subtle);
    font-weight: 600;
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.results-list {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.result-row {
    display: grid;
    grid-template-columns: 2fr 120px 200px 140px;
    padding: 16px 30px;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 14px;
    align-items: center;
    transition: background 0.1s;
}

.result-row:hover {
    background: rgba(255, 255, 255, 0.5);
}

.col-domain {
    font-family: 'SF Mono', 'Monaco', monospace;
    font-weight: 600;
    color: var(--text-primary);
}

.status-tag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-avail {
    background: var(--success-bg);
    color: var(--success-text);
}

.status-reg {
    background: var(--warning-bg);
    color: var(--warning-text);
}

.status-exp {
    background: var(--danger-bg);
    color: var(--danger-text);
}

.status-err {
    background: #f1f5f9;
    color: var(--text-secondary);
}

.days-count {
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}

.days-ok {
    color: var(--success-text);
}

.days-warn {
    color: var(--warning-text);
}

.days-crit {
    color: var(--danger-text);
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    gap: 16px;
    opacity: 0.6;
}

.empty-state::before {
    content: '⚡';
    font-size: 48px;
    display: block;
    margin-bottom: 10px;
    opacity: 0.3;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(203, 213, 225, 0.8);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.8);
}