:root {
    --primary-bg: #0b1120; /* Deeper dark navy */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --accent: #38bdf8; /* Vibrant Cyan-Blue */
    --accent-glow: rgba(56, 189, 248, 0.4);
    --text-main: #ffffff;
    --text-dim: #94a3b8; /* Slate gray for subtitle/labels */
    --success: #10b981;
    --error: #ef4444;
}

.converter-dashboard {
    font-family: 'Outfit', sans-serif !important;
    background: var(--primary-bg);
    color: var(--text-main);
    min-height: 100vh;
    padding: 60px 40px;
    margin: 0 !important;
}

/* Redesigned Header */
.dashboard-header-container {
    max-width: 900px;
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center; /* Center the logo and title group */
    gap: 15px;
}

.dashboard-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.dashboard-title-group {
    text-align: center; /* Center text within the group */
}

.dashboard-title-group h2 {
    font-size: 2.2rem;
    font-weight: 800; /* Extra bold for the premium look */
    margin: 0;
    color: var(--accent);
    letter-spacing: -0.02em;
    line-height: 1;
}

.subtitle {
    color: var(--text-dim);
    font-size: 1rem;
    font-weight: 400;
    margin: 4px 0 0;
    text-align: center; /* Perfect center alignment */
}

.dashboard-header {
    text-align: center;
    margin-bottom: 30px;
}

/* Tabs */
.tab-controls {
    display: flex;
    justify-content: center; /* Center the tabs */
    gap: 15px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 20px;
    margin-bottom: 30px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-size: 1rem;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.tab-btn.active {
    background: var(--accent);
    color: var(--primary-bg);
    font-weight: 600;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--glass-border);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
}

.upload-zone:hover, .upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(56, 189, 248, 0.05);
    transform: translateY(-5px);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.upload-zone h3 {
    font-size: 1.5rem;
    margin: 0;
}

.upload-zone p {
    color: var(--text-dim);
    margin: 10px 0 25px;
}

/* Buttons */
.btn {
    padding: 12px 30px;
    border-radius: 12px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.accent-btn {
    background: var(--accent);
    color: var(--primary-bg);
}

.accent-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px var(--accent-glow);
}

.secondary-btn {
    background: var(--glass-bg);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.1);
}

.small-btn {
    padding: 5px 12px;
    font-size: 0.85rem;
    background: rgba(255,255,255,0.1);
    color: var(--text-main);
    border-radius: 6px;
}

.delete-btn {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.delete-btn:hover {
    background: var(--error);
    color: white;
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 10px;
    background: var(--glass-bg);
    border-radius: 5px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    width: 0%;
    transition: width 0.3s;
    box-shadow: 0 0 10px var(--accent);
}

/* History */
.history-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-name {
    font-weight: 600;
    display: block;
}

.file-date {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.item-actions {
    display: flex;
    gap: 10px;
}

.empty-msg {
    text-align: center;
    color: var(--text-dim);
    padding: 40px;
}

/* Response Message */
#result-message {
    margin-top: 20px;
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

#result-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

#result-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
}