/* CodeStep 2.0 - Solutions History & Management Styles */
.solutions-page {
    max-width: 1140px;
    margin: 24px auto 60px;
    padding: 0 16px;
    color: inherit;
}

.solutions-header-section {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.solutions-header-section h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 4px 0 6px;
    background: linear-gradient(135deg, #10b981, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.solutions-subtitle {
    color: var(--account-muted, #94a3b8);
    font-size: 0.9375rem;
    margin: 0;
}

/* Stats Cards Grid */
.solutions-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-bottom: 28px;
}

.solutions-stat-card {
    background: var(--account-panel, #182331);
    border: 1px solid var(--account-border, #344457);
    border-radius: 14px;
    padding: 16px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: transform .15s ease, border-color .15s ease;
}

.solutions-stat-card:hover {
    transform: translateY(-2px);
    border-color: #3b82f640;
}

.stat-icon-wrapper {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.stat-icon-accepted {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.stat-icon-failed {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

.stat-icon-drafts {
    background: rgba(59, 130, 246, 0.15);
    color: #3b82f6;
}

.stat-icon-rate {
    background: rgba(245, 158, 11, 0.15);
    color: #f59e0b;
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--account-muted, #94a3b8);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.stat-subtext {
    font-size: 0.6875rem;
    color: var(--account-muted, #94a3b8);
    margin-top: 4px;
}

.stat-progress-bar {
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    margin-top: 6px;
    overflow: hidden;
}

.stat-progress-fill {
    height: 100%;
    background: #f59e0b;
    border-radius: 3px;
    transition: width .4s ease;
}

/* Tabs Navigation */
.solutions-nav-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--account-border, #344457);
    padding-bottom: 12px;
}

.solutions-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.solutions-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 10px;
    border: 1px solid var(--account-border, #344457);
    background: transparent;
    color: inherit;
    font: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .15s ease;
}

.solutions-tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: #3b82f6;
}

.solutions-tab-btn.active {
    background: #10b981;
    border-color: #10b981;
    color: #fff !important;
}

.solutions-tab-btn.active .tab-badge {
    background: rgba(0, 0, 0, 0.25);
    color: #fff;
}

.solutions-tab-btn.tab-accepted.active {
    background: #059669;
    border-color: #059669;
}

.solutions-tab-btn.tab-failed.active {
    background: #dc2626;
    border-color: #dc2626;
}

.tab-badge {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.solutions-search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--account-panel, #182331);
    border: 1px solid var(--account-border, #344457);
    border-radius: 10px;
    padding: 6px 12px;
    min-width: 220px;
}

.solutions-search-box input {
    background: transparent;
    border: none;
    outline: none;
    color: inherit;
    font: inherit;
    font-size: 0.8125rem;
    width: 100%;
}

.solutions-search-box i {
    color: var(--account-muted, #94a3b8);
    font-size: 0.8125rem;
}

/* History Cards List */
.solutions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.solution-item-card {
    background: var(--account-panel, #182331);
    border: 1px solid var(--account-border, #344457);
    border-radius: 14px;
    padding: 16px 20px;
    transition: all .2s ease;
    border-left: 4px solid var(--account-border, #344457);
}

.solution-item-card:hover {
    border-color: rgba(59, 130, 246, 0.4);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.solution-item-card.verdict-accepted {
    border-left-color: #10b981;
}

.solution-item-card.verdict-wrong_answer {
    border-left-color: #ef4444;
}

.solution-item-card.verdict-error {
    border-left-color: #f97316;
}

.solution-item-card.verdict-structure_passed {
    border-left-color: #3b82f6;
}

.solution-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.solution-problem-info {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.solution-problem-title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin: 0;
}

.solution-topic-badge {
    color: var(--account-muted, #94a3b8);
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.solution-header-badges {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.lang-badge {
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.lang-python {
    background: rgba(55, 118, 171, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(55, 118, 171, 0.3);
}

.lang-cpp {
    background: rgba(0, 68, 130, 0.25);
    color: #93c5fd;
    border: 1px solid rgba(0, 68, 130, 0.35);
}

.verdict-tag {
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.verdict-tag.tag-accepted {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.verdict-tag.tag-wrong {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.verdict-tag.tag-error {
    background: rgba(249, 115, 22, 0.15);
    color: #fb923c;
    border: 1px solid rgba(249, 115, 22, 0.3);
}

.verdict-tag.tag-structure {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

/* Metadata & Actions Row */
.solution-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px dashed rgba(255, 255, 255, 0.08);
}

.solution-meta-items {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.8125rem;
    color: var(--account-muted, #94a3b8);
    flex-wrap: wrap;
}

.solution-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.solution-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sol-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--account-border, #344457);
    background: transparent;
    color: inherit;
    cursor: pointer;
    transition: all .15s ease;
}

.sol-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: #3b82f6;
    color: #3b82f6;
}

.sol-btn-primary {
    background: #10b981;
    border-color: #10b981;
    color: #fff !important;
}

.sol-btn-primary:hover {
    background: #059669;
    border-color: #059669;
    color: #fff !important;
}

/* Code Inspector Drawer */
.solution-code-drawer {
    margin-top: 14px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--account-border, #344457);
    border-radius: 10px;
    padding: 14px;
    display: none;
    animation: fadeIn .2s ease;
}

.solution-code-drawer.open {
    display: block;
}

.drawer-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--account-muted, #94a3b8);
    margin: 8px 0 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-code-pre {
    margin: 0 0 10px;
    padding: 12px;
    background: #0d1117;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font: 12px/1.6 Consolas, 'Cascadia Code', monospace;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    max-height: 280px;
    overflow: auto;
    color: #e2e8f0;
}

.drawer-output-pre {
    margin: 0;
    padding: 10px 12px;
    background: #0d1117;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font: 12px/1.6 Consolas, monospace;
    color: #94a3b8;
    max-height: 180px;
    overflow: auto;
    white-space: pre-wrap;
}

.copy-status-tip {
    font-size: 0.6875rem;
    color: #10b981;
    display: none;
}

/* Drafts Grid */
.drafts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px;
}

.draft-card {
    background: var(--account-panel, #182331);
    border: 1px solid var(--account-border, #344457);
    border-radius: 14px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 12px;
    transition: all .2s ease;
}

.draft-card:hover {
    border-color: #3b82f6;
    transform: translateY(-2px);
}

.draft-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.draft-problem-title {
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 4px;
}

.draft-topic-title {
    font-size: 0.75rem;
    color: var(--account-muted, #94a3b8);
    margin: 0;
}

.draft-preview-code {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--account-border, #344457);
    border-radius: 8px;
    padding: 8px 10px;
    font: 11px/1.5 Consolas, monospace;
    color: #94a3b8;
    max-height: 80px;
    overflow: hidden;
    white-space: pre;
    text-overflow: ellipsis;
}

.draft-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
}

.draft-time {
    font-size: 0.6875rem;
    color: var(--account-muted, #94a3b8);
}

/* Empty State */
.solutions-empty-state {
    text-align: center;
    padding: 48px 24px;
    background: var(--account-panel, #182331);
    border: 1px solid var(--account-border, #344457);
    border-radius: 16px;
    margin: 20px 0;
}

.empty-icon {
    font-size: 2.5rem;
    color: var(--account-muted, #94a3b8);
    margin-bottom: 12px;
    opacity: 0.6;
}

.empty-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.empty-desc {
    font-size: 0.875rem;
    color: var(--account-muted, #94a3b8);
    max-width: 440px;
    margin: 0 auto 18px;
}

/* Light Theme Overrides */
.light-mode .solutions-stat-card,
.light-mode .solution-item-card,
.light-mode .draft-card,
.light-mode .solutions-empty-state,
.light-mode .solutions-search-box {
    background: #ffffff;
    border-color: #e2e8f0;
}

.light-mode .solution-item-card:hover,
.light-mode .draft-card:hover {
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}

.light-mode .drawer-code-pre,
.light-mode .drawer-output-pre {
    background: #f8fafc;
    border-color: #e2e8f0;
    color: #1e293b;
}

.light-mode .draft-preview-code {
    background: #f8fafc;
    border-color: #e2e8f0;
    color: #475569;
}

.light-mode .solutions-tab-btn:hover {
    background: #f1f5f9;
}

.light-mode .stat-progress-bar {
    background: #e2e8f0;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 768px) {
    .solutions-heading h1 { font-size: 1.6rem; }
    .solutions-stats-grid { grid-template-columns: repeat(2, 1fr); }
    .solution-item-meta { flex-direction: column; align-items: flex-start; gap: 8px; }
    .solution-actions { width: 100%; justify-content: flex-end; }
}

@media (max-width: 480px) {
    .solutions-stats-grid { grid-template-columns: 1fr; }
    .solutions-search-box { width: 100%; }
}