/* ============================================
   EMPTY STATES - Helpful CTAs for First-Time Users
   ============================================ */

/* Base Empty State Container */
.empty-state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    text-align: center;
    background: white;
    border-radius: 16px;
    border: 2px dashed var(--gray-200);
    margin: 20px;
    min-height: 400px;
}

.empty-state-container.compact {
    padding: 40px 30px;
    min-height: 280px;
}

.empty-state-container.inline {
    padding: 32px 24px;
    min-height: auto;
    margin: 0;
    border-radius: 12px;
}

/* Illustration */
.empty-state-illustration {
    width: 160px;
    height: 160px;
    margin-bottom: 32px;
    position: relative;
}

.empty-state-illustration.compact {
    width: 120px;
    height: 120px;
    margin-bottom: 24px;
}

.empty-state-illustration svg {
    width: 100%;
    height: 100%;
}

/* Animated Background Circle */
.empty-state-illustration::before {
    content: '';
    position: absolute;
    inset: -10px;
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-radius: 50%;
    z-index: -1;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

/* Icon Circle */
.empty-state-icon-circle {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-50));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
}

.empty-state-icon-circle.compact {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}

.empty-state-icon-circle svg {
    width: 48px;
    height: 48px;
    color: var(--primary-600);
}

.empty-state-icon-circle.compact svg {
    width: 36px;
    height: 36px;
}

/* Text Content */
.empty-state-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
    line-height: 1.3;
}

.empty-state-title.compact {
    font-size: 20px;
}

.empty-state-description {
    font-size: 16px;
    color: var(--gray-600);
    max-width: 440px;
    line-height: 1.6;
    margin-bottom: 32px;
}

.empty-state-description.compact {
    font-size: 14px;
    margin-bottom: 24px;
}

/* Actions */
.empty-state-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.empty-state-actions.horizontal {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
}

/* Primary CTA Button */
.empty-state-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
    text-decoration: none;
}

.empty-state-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.4);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    color: white;
}

.empty-state-cta:active {
    transform: translateY(0);
}

.empty-state-cta svg {
    width: 20px;
    height: 20px;
}

/* Secondary Link */
.empty-state-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--gray-600);
    font-size: 14px;
    text-decoration: none;
    transition: color 0.15s;
}

.empty-state-secondary:hover {
    color: var(--primary-600);
}

.empty-state-secondary svg {
    width: 16px;
    height: 16px;
}

/* Tips Section */
.empty-state-tips {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--gray-200);
    width: 100%;
    max-width: 600px;
}

.empty-state-tips-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.empty-state-tips-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    text-align: left;
}

.empty-state-tip {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--gray-50);
    border-radius: 10px;
    transition: background 0.15s;
}

.empty-state-tip:hover {
    background: var(--gray-100);
}

.empty-state-tip-icon {
    width: 32px;
    height: 32px;
    background: white;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary-600);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.empty-state-tip-icon svg {
    width: 18px;
    height: 18px;
}

.empty-state-tip-content {
    flex: 1;
    min-width: 0;
}

.empty-state-tip-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.empty-state-tip-text {
    font-size: 13px;
    color: var(--gray-500);
    line-height: 1.4;
}

/* Quick Stats (for when there's partial data) */
.empty-state-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 32px;
    padding: 20px 32px;
    background: var(--gray-50);
    border-radius: 12px;
}

.empty-state-stat {
    text-align: center;
}

.empty-state-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
}

.empty-state-stat-label {
    font-size: 12px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

/* Filter Empty State (when filters return no results) */
.empty-state-filtered {
    padding: 48px 32px;
    background: var(--gray-50);
    border-radius: 12px;
    border: 1px solid var(--gray-200);
}

.empty-state-filtered .empty-state-icon-circle {
    width: 64px;
    height: 64px;
    background: var(--warning-light);
    margin-bottom: 20px;
}

.empty-state-filtered .empty-state-icon-circle svg {
    width: 28px;
    height: 28px;
    color: var(--warning-dark);
}

.empty-state-filtered .empty-state-title {
    font-size: 18px;
    margin-bottom: 8px;
}

.empty-state-filtered .empty-state-description {
    font-size: 14px;
    margin-bottom: 20px;
}

.empty-state-filtered .empty-state-cta {
    padding: 10px 20px;
    font-size: 14px;
    background: var(--gray-700);
    box-shadow: none;
}

.empty-state-filtered .empty-state-cta:hover {
    background: var(--gray-800);
    box-shadow: none;
}

/* Variation: Success/Complete Empty State */
.empty-state-success .empty-state-icon-circle {
    background: linear-gradient(135deg, var(--success-light), rgba(34, 197, 94, 0.2));
}

.empty-state-success .empty-state-icon-circle svg {
    color: var(--success-dark);
}

/* Variation: Warning Empty State */
.empty-state-warning .empty-state-icon-circle {
    background: linear-gradient(135deg, var(--warning-light), rgba(245, 158, 11, 0.2));
}

.empty-state-warning .empty-state-icon-circle svg {
    color: var(--warning-dark);
}

/* Variation: Error Empty State */
.empty-state-error .empty-state-icon-circle {
    background: linear-gradient(135deg, var(--error-light), rgba(239, 68, 68, 0.2));
}

.empty-state-error .empty-state-icon-circle svg {
    color: var(--error-dark);
}

/* Responsive */
@media (max-width: 768px) {
    .empty-state-container {
        padding: 40px 24px;
        margin: 12px;
    }

    .empty-state-illustration {
        width: 120px;
        height: 120px;
    }

    .empty-state-title {
        font-size: 20px;
    }

    .empty-state-description {
        font-size: 14px;
    }

    .empty-state-tips-list {
        grid-template-columns: 1fr;
    }

    .empty-state-stats {
        flex-direction: column;
        gap: 16px;
    }
}

/* ============================================
   SPECIFIC EMPTY STATES
   ============================================ */

/* Dashboard - No Analyses */
.dashboard-empty-state {
    margin: 24px 0;
}

/* History - No Results */
.history-empty-state {
    margin: 0;
    border-radius: 0;
    border: none;
    border-top: 1px solid var(--gray-200);
}

/* Validation - No Data */
.validation-empty-state {
    margin: 20px;
}

/* Library - No Documents */
.library-empty-state {
    margin: 24px;
}

/* Reports - No Reports */
.reports-empty-state {
    margin: 24px;
}