:root {
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --text-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.1);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-hover: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --success-color: #4ade80;
    --danger-color: #ef4444;
    --warning-color: #facc15;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Header */
.app-header {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--card-border);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0;
    background: linear-gradient(to right, #60a5fa, #c084fc);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.home-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-color);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
}

.home-btn:hover {
    background: var(--card-hover);
    transform: translateY(-2px);
}

/* Tabs */
.tabs {
    display: flex;
    padding: 16px 20px;
    gap: 12px;
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: 1px solid var(--card-border);
    color: #94a3b8;
    padding: 10px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}

.tab-btn.active {
    background: rgba(59, 130, 246, 0.2);
    border-color: #3b82f6;
    color: #fff;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 0 20px 20px;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    display: none;
}

.content-area.active {
    display: block;
}

/* Vendor Cards */
.vendor-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.vendor-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.vendor-name {
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.vendor-details {
    font-size: 0.85rem;
    color: #94a3b8;
}

.vendor-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: none;
    color: #cbd5e1;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 1.1rem;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.icon-btn.delete:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.status-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 12px;
    background: rgba(74, 222, 128, 0.2);
    color: #4ade80;
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.status-badge.inactive {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

/* Floating Action Button */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 28px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border: none;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s;
    z-index: 90;
}

.fab:hover {
    transform: scale(1.05);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: #1e293b;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 20px 0;
    color: #fff;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: #94a3b8;
    font-size: 0.9rem;
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    box-sizing: border-box;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: #3b82f6;
    background: rgba(255, 255, 255, 0.1);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.btn {
    padding: 10px 20px;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #cbd5e1;
}

.btn-primary {
    background: #3b82f6;
    color: white;
}