/* ==========================================================================
   Tutor Credits & Billing Stylesheet - Layout Fixed
   ========================================================================== */

/* Typography & Reset
========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body, input, button, select, textarea {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --hover-bg: #f8fafc;
    --success-color: #10b981;
    --success-bg: #ecfdf5;
    --danger-color: #ef4444;
    --danger-bg: #fef2f2;
    --sidebar-width: 260px;
}

/* Dashboard Body & Layout Structure (Fixes Shift Issue)
========================================================================== */
body.tm-dashboard-body {
    display: flex;
    min-height: 100vh;
    background-color: #f8fafc;
}

.tm-dashboard-sidebar {
    width: var(--sidebar-width);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.main-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    padding: 2rem;
    min-height: 100vh;
}

/* Top Header Alignment Fix
========================================================================== */
.top-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.tm-dashboard-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-left: auto;
}

.icon-btn {
    position: relative;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background-color: var(--danger-color);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 700;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.avatar-small {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
    background-color: #e2e8f0;
}

.profile-meta {
    display: flex;
    flex-direction: column;
}

.profile-meta .name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
}

.profile-meta .role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Page Title Section
========================================================================== */
.page-title-section {
    margin-bottom: 2rem;
}

.page-title-section h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.page-title-section p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Credits Overview Card - Grid Alignment Fixed
========================================================================== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.credits-overview-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1.2fr;
    gap: 2rem;
    align-items: center;
    margin-bottom: 2.5rem;
}

.credits-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.credits-left .label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.credits-number-group {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.big-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-color);
    line-height: 1;
}

.sub-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
}

.plan-tag {
    display: inline-block;
    background-color: #eff6ff;
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 0.35rem;
}

.validity {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Donut Chart */
.credits-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.donut-chart-container {
    position: relative;
    width: 140px;
    height: 140px;
}

.donut-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.donut-bg {
    fill: none;
    stroke: #e2e8f0;
    stroke-width: 10;
}

.donut-progress {
    fill: none;
    stroke: var(--primary-color);
    stroke-width: 10;
    stroke-linecap: round;
}

.chart-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.used-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.used-val {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.1;
}

.credits-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Stats Right */
.stats-list {
    list-style: none;
    margin: 0 0 1.25rem 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.stats-list li {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
}

.stat-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 0.75rem;
}

.dot-light { background-color: #cbd5e1; }
.dot-blue { background-color: var(--primary-color); }
.dot-sky { background-color: #38bdf8; }

.stat-name {
    color: var(--text-muted);
    flex-grow: 1;
}

.stat-value {
    font-weight: 700;
    color: var(--text-color);
}

.buy-btn-main {
    width: 100%;
}

/* Buy Credits Section Grid Fix
========================================================================== */
.buy-credits-section {
    margin-bottom: 2.5rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.25rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.pricing-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
}

.popular-card {
    border: 2px solid var(--primary-color);
}

.popular-badge {
    position: absolute;
    top: -12px;
    background-color: var(--primary-color);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.85rem;
    border-radius: 20px;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.star-icon { background-color: #fef3c7; color: #d97706; }
.coins-icon { background-color: #dbeafe; color: var(--primary-color); }

.credit-qty {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.credit-qty span {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-color);
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1.25rem;
}

.info-card {
    background: var(--hover-bg);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    position: relative;
}

.info-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.info-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.info-list svg {
    width: 16px;
    height: 16px;
    color: var(--success-color);
    flex-shrink: 0;
}

.shield-illustration {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    font-size: 2rem;
    opacity: 0.2;
}

/* Two Column History Section
========================================================================== */
.history-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.history-card .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.history-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
}

.link-btn {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding-bottom: 0.85rem;
    border-bottom: 1px solid var(--border-color);
}

.history-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.item-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-add { background-color: var(--success-bg); color: var(--success-color); }
.icon-use { background-color: var(--danger-bg); color: var(--danger-color); }
.icon-user { background-color: #eff6ff; color: var(--primary-color); }

.item-details {
    flex-grow: 1;
}

.item-details h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-color);
}

.item-details p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.item-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.item-amount {
    font-size: 0.95rem;
    font-weight: 700;
    min-width: 30px;
    text-align: right;
}

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

/* Common Buttons
========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease;
    width: 100%;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
}

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

/* Footer
========================================================================== */
.footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.footer-security {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.25rem;
}

.footer-note {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Responsive Handling
========================================================================== */
@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .tm-dashboard-sidebar {
        transform: translateX(-100%);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
    }

    .tm-dashboard-menu-toggle {
        display: block;
    }

    .credits-overview-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .credits-left {
        align-items: center;
    }

    .history-grid {
        grid-template-columns: 1fr;
    }
}