/* Custom Brand Colors */
:root {
    --tantu-slate: #1e293b;
    --tantu-slate-light: #334155;
    --tantu-gold: #c5a059;
    --tantu-gold-light: #e2c07d;
    --tantu-ice-blue: #f0fdfa;
    --tantu-cyan: #0ea5e9;
    --tantu-gray: #f8fafc;
    --tantu-border: #e2e8f0;
    --tantu-text: #0f172a;
    --tantu-text-muted: #64748b;
    --tantu-success: #10b981;
    --tantu-error: #ef4444;
}

/* 1. Global Classes */
.tantu-notice {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid;
    font-size: 14px;
}
.tantu-notice.error-notice {
    background-color: #fef2f2;
    border-color: var(--tantu-error);
    color: #991b1b;
}
.tantu-notice.warning-notice {
    background-color: #fffbeb;
    border-color: #f59e0b;
    color: #92400e;
}
.tantu-notice.success-notice {
    background-color: #ecfdf5;
    border-color: var(--tantu-success);
    color: #065f46;
}

/* Spinner */
.tantu-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0,0,0,.1);
    border-radius: 50%;
    border-top-color: var(--tantu-gold);
    animation: tantu-spin 1s ease-in-out infinite;
    margin-right: 10px;
    vertical-align: middle;
}
@keyframes tantu-spin {
    to { transform: rotate(360deg); }
}

/* Badges */
.tantu-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
}
.badge-college {
    background-color: var(--tantu-slate);
    color: #fff;
}
.badge-batch {
    background-color: var(--tantu-ice-blue);
    color: var(--tantu-slate-light);
    border: 1px solid var(--tantu-border);
}

/* 2. Login & Registration Forms */
.tantu-form {
    background: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--tantu-border);
    margin-top: 20px;
}
.tantu-form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
}
@media (max-width: 768px) {
    .tantu-form-row {
        flex-direction: column;
        gap: 0;
    }
}
.tantu-form-group {
    flex: 1;
    margin-bottom: 20px;
}
.tantu-form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--tantu-slate);
    font-size: 13px;
}
.tantu-form-group input[type="text"],
.tantu-form-group input[type="email"],
.tantu-form-group input[type="url"],
.tantu-form-group input[type="number"],
.tantu-form-group input[type="password"],
.tantu-form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--tantu-border);
    border-radius: 6px;
    font-size: 14px;
    background-color: var(--tantu-gray);
    transition: all 0.3s ease;
    box-sizing: border-box;
}
.tantu-form-group input:focus,
.tantu-form-group select:focus {
    outline: none;
    border-color: var(--tantu-gold);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(197, 160, 89, 0.15);
}

.tantu-checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--tantu-text-muted);
    cursor: pointer;
    margin-bottom: 8px;
}
.tantu-checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

.tantu-btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}
.tantu-btn-submit {
    background-color: var(--tantu-slate);
    color: #fff;
    width: 100%;
}
.tantu-btn-submit:hover {
    background-color: var(--tantu-slate-light);
}

/* Success Message */
.tantu-success-message {
    background: var(--tantu-ice-blue);
    border: 1px solid var(--tantu-border);
    border-left: 5px solid var(--tantu-success);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
}
.tantu-success-message h3 {
    color: var(--tantu-slate);
    margin-top: 0;
}

/* Login box style override */
.tantu-login-wrapper #tantuloginform {
    max-width: 450px;
    margin: 0 auto;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--tantu-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.tantu-login-wrapper .login-username,
.tantu-login-wrapper .login-password {
    margin-bottom: 15px;
}
.tantu-login-wrapper .login-username label,
.tantu-login-wrapper .login-password label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}
.tantu-login-wrapper .login-username input,
.tantu-login-wrapper .login-password input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--tantu-border);
    border-radius: 5px;
}
.tantu-login-wrapper .login-submit input {
    background-color: var(--tantu-gold);
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    width: 100%;
}
.tantu-login-wrapper .login-submit input:hover {
    background-color: var(--tantu-gold-light);
}
.tantu-register-link {
    text-align: center;
    margin-top: 15px;
    font-size: 13px;
}

/* 3. Alumni Directory Table */
.tantu-directory-controls {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 20px;
    background: var(--tantu-gray);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--tantu-border);
    margin-bottom: 25px;
}
@media (max-width: 768px) {
    .tantu-directory-controls {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}
.tantu-filter-group {
    display: flex;
    flex-direction: column;
}
.tantu-filter-group label {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--tantu-slate-light);
}
.tantu-filter-group input,
.tantu-filter-group select {
    padding: 8px 12px;
    border: 1px solid var(--tantu-border);
    border-radius: 5px;
    background: #fff;
}

.tantu-directory-table-wrapper {
    overflow-x: auto;
}
.tantu-directory-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    border: 1px solid var(--tantu-border);
}
.tantu-directory-table th {
    background-color: var(--tantu-slate);
    color: #fff;
    text-align: left;
    padding: 14px 16px;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.5px;
}
.tantu-directory-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--tantu-border);
    font-size: 13.5px;
    color: var(--tantu-text);
}
.tantu-directory-table tr:last-child td {
    border-bottom: none;
}
.tantu-directory-table tr:hover td {
    background-color: #f8fafc;
}

.company-cell {
    display: flex;
    flex-direction: column;
}
.desig-text {
    font-weight: 600;
    color: var(--tantu-slate);
}
.company-text {
    color: var(--tantu-text-muted);
}
.at-text {
    color: var(--tantu-gold);
    font-size: 11px;
}
.private-tag {
    color: var(--tantu-text-muted);
    font-style: italic;
    font-size: 12px;
    background-color: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
}
.tantu-li-btn {
    background-color: #0077b5;
    color: #fff !important;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: opacity 0.2s;
}
.tantu-li-btn:hover {
    opacity: 0.9;
}

/* 4. Seminars Section */
.tantu-tab-header {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--tantu-border);
    padding-bottom: 10px;
    overflow-x: auto;
}
.tantu-tab-btn {
    background: none;
    border: 1px solid var(--tantu-border);
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    color: var(--tantu-slate-light);
    white-space: nowrap;
    transition: all 0.3s ease;
}
.tantu-tab-btn:hover {
    border-color: var(--tantu-gold);
    color: var(--tantu-gold);
}
.tantu-tab-btn.active {
    background-color: var(--tantu-gold);
    border-color: var(--tantu-gold);
    color: #fff;
}

.tantu-year-content {
    display: none;
}
.tantu-year-content.active {
    display: block;
}

.tantu-seminar-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}
.tantu-seminar-card {
    background: #fff;
    border: 1px solid var(--tantu-border);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    display: flex;
}
@media (max-width: 768px) {
    .tantu-seminar-card {
        flex-direction: column;
    }
}
.seminar-image {
    width: 250px;
    min-height: 200px;
    background-size: cover;
    background-position: center;
}
@media (max-width: 768px) {
    .seminar-image {
        width: 100%;
        height: 180px;
    }
}
.seminar-info {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.seminar-title {
    margin-top: 0;
    color: var(--tantu-slate);
    font-size: 20px;
    border-bottom: 1px solid var(--tantu-border);
    padding-bottom: 10px;
}
.seminar-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    color: var(--tantu-text-muted);
    font-size: 12px;
}
.seminar-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}
.seminar-speakers {
    background-color: var(--tantu-gray);
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 13px;
    border-left: 3px solid var(--tantu-gold);
}
.seminar-speakers strong {
    display: block;
    margin-bottom: 4px;
}
.seminar-description {
    font-size: 13.5px;
    line-height: 1.6;
    margin-bottom: 20px;
}
.tantu-btn-download {
    background-color: var(--tantu-slate);
    color: #fff !important;
    padding: 8px 16px;
    font-size: 13px;
}
.tantu-btn-download:hover {
    background-color: var(--tantu-slate-light);
}

/* 5. Publications Section */
.tantu-publications-center {
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.tantu-pub-category-section {
    border-bottom: 1px solid var(--tantu-border);
    padding-bottom: 30px;
}
.tantu-pub-category-section:last-child {
    border-bottom: none;
}
.category-heading {
    color: var(--tantu-slate);
    font-size: 22px;
    margin-bottom: 5px;
}
.category-description {
    color: var(--tantu-text-muted);
    font-size: 13px;
    margin-top: 0;
    margin-bottom: 20px;
}
.tantu-pub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 30px;
}
.tantu-pub-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.tantu-pub-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.tantu-pub-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media(max-width: 991px) {
    .tantu-pub-grid.cols-3, .tantu-pub-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media(max-width: 640px) {
    .tantu-pub-grid.cols-2, .tantu-pub-grid.cols-3, .tantu-pub-grid.cols-4 { grid-template-columns: 1fr; }
}
.tantu-pub-card {
    background: #ffffff;
    border: 1px solid var(--tantu-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    display: flex;
    flex-direction: column;
}
.tantu-pub-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 46, 92, 0.08);
    border-color: var(--tantu-gold);
}
.pub-card-cover-wrapper {
    position: relative;
    background-color: #f8fafc;
    padding: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid var(--tantu-border);
    overflow: hidden;
}
.pub-card-cover-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0) 60%, rgba(0,0,0,0.02));
    pointer-events: none;
}
.pub-card-cover {
    width: 140px;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.15), 1px 1px 0px rgba(255,255,255,0.2) inset;
    transition: transform 0.3s ease;
}
.tantu-pub-card:hover .pub-card-cover {
    transform: scale(1.03) rotate(-1.5deg);
}
.pub-card-cover-placeholder {
    width: 140px;
    height: 200px;
    background: linear-gradient(135deg, #001b38, #002e5c);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 16px rgba(0,0,0,0.15);
    color: var(--tantu-gold);
}
.pub-card-cover-placeholder .dashicons {
    font-size: 48px;
    width: 48px;
    height: 48px;
}
.pub-card-year-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--tantu-slate);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    letter-spacing: 0.5px;
}
.tantu-pub-card:hover .pub-card-year-badge {
    background-color: var(--tantu-gold);
}
.pub-card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.pub-card-title {
    margin: 0 0 10px 0;
    font-size: 16px;
    color: var(--tantu-slate);
    font-weight: 700;
    line-height: 1.4;
}
.pub-card-desc {
    font-size: 13px;
    color: var(--tantu-text-muted);
    line-height: 1.5;
    margin: 0 0 20px 0;
    flex-grow: 1;
}
.pub-card-footer {
    margin-top: auto;
}
.pub-card-dl-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    background-color: var(--tantu-slate);
    color: #fff !important;
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
}
.pub-card-dl-btn:hover {
    background-color: var(--tantu-gold);
    color: #fff !important;
}

/* 6. Team & Committee Sections */
.tantu-team-sec {
  background: #f8fafc;
  padding: 60px 30px;
  border-radius: 16px;
  font-family: inherit;
  margin-bottom: 40px;
  border: 1px solid #e2e8f0;
}
.tantu-team-sec-white {
  background: #ffffff;
  padding: 60px 30px;
  border-radius: 16px;
  font-family: inherit;
  margin-bottom: 40px;
  border: 1px solid #e2e8f0;
}
.tantu-team-inner {
  max-width: 1200px;
  margin: 0 auto;
}
.tantu-team-label {
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: #c5a059;
  border-left: 3px solid #c5a059;
  padding-left: 12px;
  margin-bottom: 28px;
}
.tantu-team-grid {
  display: grid;
  gap: 20px;
}
.tantu-team-grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); }
.tantu-team-grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.tantu-team-grid.cols-4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

.tantu-team-list-layout {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tantu-team-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: box-shadow .3s, transform .25s;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.tantu-team-card.featured-card {
  border: 2px solid #c5a059;
  box-shadow: 0 4px 20px rgba(197, 160, 89, 0.15);
}
.tantu-team-card:hover {
  box-shadow: 0 8px 32px rgba(0, 46, 92, .08);
  transform: translateY(-2px);
}
.tantu-team-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #002e5c, #c5a059);
}
.tantu-member-av {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, #002e5c, #c5a059);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
  color: #fff;
  margin-bottom: 14px;
  overflow: hidden;
}
.tantu-member-av img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tantu-member-name {
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tantu-featured-badge {
  font-size: 10px;
  background: #c5a059;
  color: #fff;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 800;
  text-transform: uppercase;
}
.tantu-member-role {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: #c5a059;
  margin: 0 0 8px;
}
.tantu-member-org {
  font-size: 13px;
  color: #64748b;
  line-height: 1.5;
  margin: 0;
}
.tantu-member-li-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 12px;
  font-weight: 700;
  color: #0077b5;
  text-decoration: none;
  transition: color .2s;
}
.tantu-member-li-link:hover {
  color: #005582;
  text-decoration: underline;
}

/* List Layout Items */
.tantu-team-list-item {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: all 0.3s;
  position: relative;
}
.tantu-team-list-item:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border-color: #c5a059;
}
.tantu-team-list-item .tantu-member-av {
  margin-bottom: 0;
  flex-shrink: 0;
}
.tantu-team-list-item .tantu-member-info {
  flex-grow: 1;
}
.tantu-team-list-item .tantu-member-li-link {
  margin-top: 0;
}

.tantu-team-membox {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 40px;
}
.tantu-team-membox h3 {
  font-size: 20px;
  font-weight: 800;
  color: #001b38;
  margin: 0 0 20px;
}
.tantu-team-membox ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.tantu-team-membox li {
  display: flex;
  gap: 10px;
  font-size: 14px;
  color: #475569;
  line-height: 1.6;
}
.tantu-team-membox li::before {
  content: "◆";
  color: #c5a059;
  font-size: 10px;
  margin-top: 4px;
  flex-shrink: 0;
}

.tantu-team-intro {
  background: #001b38;
  color: #fff;
  padding: 80px 0;
  text-align: center;
  border-radius: 16px;
  margin-bottom: 40px;
}
.tantu-team-intro h1 {
  font-size: 42px;
  font-weight: 850;
  color: #fff;
  margin: 0 0 16px 0;
  letter-spacing: -0.02em;
}
.tantu-team-intro .gold-bar {
  width: 60px;
  height: 3px;
  background: #c5a059;
  margin: 0 auto 24px auto;
}
.tantu-team-intro p {
  font-size: 18px;
  color: #94a3b8;
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.6;
}

@media(max-width: 640px) {
  .tantu-team-grid.cols-2, .tantu-team-grid.cols-3, .tantu-team-grid.cols-4 { grid-template-columns: 1fr; }
  .tantu-team-sec, .tantu-team-sec-white { padding: 40px 20px; }
  .tantu-team-list-item { flex-direction: column; align-items: flex-start; gap: 10px; }
  .tantu-team-intro h1 { font-size: 32px; }
}