/* ==========================================================================
   Kavery Arts & Science College - Milestone & Vision/Mission Stylesheet
   ========================================================================== */

:root {
    --primary-color: #313C99;
    --primary-dark: #1e255e;
    --primary-light: #4854c7;
    --accent-color: #0DF3F7;
    --accent-dark: #00c4c8;
    --accent-light: #e0ffff;
    --bg-light: #f8fafc;
    --bg-warm: #fff9f5;
    --card-shadow: 0 10px 30px rgba(49, 60, 153, 0.08);
    --card-hover-shadow: 0 20px 45px rgba(49, 60, 153, 0.16);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border-radius: 16px;
    --transition-fast: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Paragraph Font Size Rule */
p {
    font-size: 20px;
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Hero Banner & Quick Stats Section
   -------------------------------------------------------------------------- */
.milestone-hero-banner {
    position: relative;
    padding: 90px 0 70px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

.milestone-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(49, 60, 153, 0.85) 100%);
    z-index: 1;
}

.milestone-hero-content {
    position: relative;
    z-index: 2;
}

.milestone-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    background: rgba(13, 243, 247, 0.15);
    border: 1px solid rgba(13, 243, 247, 0.35);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    color: var(--accent-color);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.milestone-hero-title {
    color: #ffffff;
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
}

.milestone-hero-title span {
    background: linear-gradient(90deg, #ffffff 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.milestone-hero-subtitle {
    color: rgba(255, 255, 255, 0.88);
    font-size: 20px;
    max-width: 720px;
    line-height: 1.6;
    margin-bottom: 35px;
}

/* Quick Stats Bar */
.quick-stats-wrapper {
    position: relative;
    z-index: 2;
    margin-top: 40px;
}

.quick-stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--border-radius);
    padding: 22px 20px;
    text-align: center;
    color: #ffffff;
    transition: var(--transition-fast);
}

.quick-stat-card:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.quick-stat-icon {
    font-size: 24px;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.quick-stat-number {
    font-size: 32px;
    font-weight: 800;
    color: #ffffff;
    line-height: 1;
    margin-bottom: 4px;
}

.quick-stat-label {
    font-size: 13px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --------------------------------------------------------------------------
   Journey Introduction Section
   -------------------------------------------------------------------------- */
.journey-intro-section {
    padding: 80px 0 60px;
    background: #ffffff;
    position: relative;
}

.journey-pillar-card {
    background: var(--bg-light);
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 24px;
    height: 100%;
    transition: var(--transition-fast);
}

.journey-pillar-card:hover {
    background: #ffffff;
    border-color: var(--primary-color);
    box-shadow: var(--card-shadow);
    transform: translateY(-4px);
}

.journey-pillar-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(49, 60, 153, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}

.journey-pillar-card:hover .journey-pillar-icon {
    background: var(--primary-color);
    color: #ffffff;
}

.journey-pillar-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.journey-pillar-text {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Timeline Section & Filters
   -------------------------------------------------------------------------- */
.timeline-section {
    padding: 80px 0 90px;
    background: var(--bg-warm);
    position: relative;
}

/* Filter Navigation Tabs */
.milestone-filter-tabs {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 60px;
}

.milestone-filter-btn {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: var(--text-secondary);
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.milestone-filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.milestone-filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(49, 60, 153, 0.3);
}

/* Main Timeline Container */
.milestone-timeline-v2 {
    position: relative;
    max-width: 1050px;
    margin: 0 auto;
}

/* Central Vertical Axis Line */
.milestone-timeline-v2::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    background: #cbd5e1;
    border-radius: 2px;
    z-index: 1;
}

.milestone-timeline-line-active {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 0%;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    z-index: 2;
    transition: height 0.3s ease-out;
}

/* Timeline Item Block */
.timeline-item-v2 {
    position: relative;
    margin-bottom: 55px;
    width: 100%;
    display: flex;
    z-index: 3;
    transition: var(--transition-smooth);
}

.timeline-item-v2.hidden {
    display: none !important;
}

.timeline-item-v2:last-child {
    margin-bottom: 0;
}

/* Left Side (Odd) */
.timeline-item-v2.left {
    justify-content: flex-start;
}

/* Right Side (Even) */
.timeline-item-v2.right {
    justify-content: flex-end;
}

/* Year Badge Center Node */
.timeline-node-year {
    position: absolute;
    left: 50%;
    top: 28px;
    transform: translate(-50%, -50%);
    width: 58px;
    height: 58px;
    background: var(--primary-color);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 15px;
    box-shadow: 0 0 0 6px rgba(49, 60, 153, 0.15), 0 8px 20px rgba(49, 60, 153, 0.3);
    z-index: 4;
    border: 3px solid #ffffff;
    transition: var(--transition-fast);
}

.timeline-item-v2.right .timeline-node-year {
    background: #0f172a;
    box-shadow: 0 0 0 6px rgba(13, 243, 247, 0.25), 0 8px 20px rgba(13, 243, 247, 0.3);
}

.timeline-item-v2:hover .timeline-node-year {
    transform: translate(-50%, -50%) scale(1.12);
    background: var(--accent-color);
    color: var(--primary-dark);
}

/* Timeline Card Content */
.timeline-card-v2 {
    width: 44%;
    background: #ffffff;
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid #e2e8f0;
    box-shadow: var(--card-shadow);
    position: relative;
    transition: var(--transition-smooth);
    opacity: 0;
    transform: translateY(30px);
}

.timeline-item-v2.left .timeline-card-v2 {
    transform: translateX(-40px);
}

.timeline-item-v2.right .timeline-card-v2 {
    transform: translateX(40px);
}

.timeline-item-v2.visible .timeline-card-v2 {
    opacity: 1;
    transform: translateX(0) translateY(0);
}

.timeline-card-v2:hover {
    box-shadow: var(--card-hover-shadow);
    border-color: rgba(49, 60, 153, 0.3);
}

/* Arrow indicator on card */
.timeline-card-v2::after {
    content: '';
    position: absolute;
    top: 24px;
    width: 14px;
    height: 14px;
    background: #ffffff;
    transform: rotate(45deg);
    border-top: 1px solid #e2e8f0;
    z-index: 1;
}

.timeline-item-v2.left .timeline-card-v2::after {
    right: -8px;
    border-right: 1px solid #e2e8f0;
}

.timeline-item-v2.right .timeline-card-v2::after {
    left: -8px;
    border-left: 1px solid #e2e8f0;
}

/* Card Elements */
.timeline-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.timeline-category-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 14px;
    border-radius: 20px;
}

.tag-academic {
    background: rgba(49, 60, 153, 0.1);
    color: var(--primary-color);
}

.tag-infra {
    background: rgba(16, 185, 129, 0.12);
    color: #059669;
}

.tag-achievement {
    background: rgba(245, 158, 11, 0.12);
    color: #d97706;
}

.timeline-card-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.timeline-card-title i {
    color: var(--primary-color);
}

.timeline-card-desc {
    color: var(--text-secondary);
    font-size: 20px;
    line-height: 1.65;
    margin-bottom: 16px;
}

/* Course / Feature Tags Group */
.timeline-tags-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
}

.timeline-tag-pill {
    background: #f1f5f9;
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    transition: var(--transition-fast);
}

.timeline-tag-pill:hover {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}

/* Highlight Box inside Card */
.timeline-highlight-box {
    background: linear-gradient(135deg, #f8fafc 0%, #edf2f7 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 10px;
    padding: 14px 18px;
    margin-top: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.timeline-highlight-box.trophy {
    border-left-color: #f59e0b;
    background: #fffbe6;
}

.timeline-highlight-icon {
    font-size: 20px;
    color: var(--primary-color);
    margin-top: 2px;
}

.timeline-highlight-box.trophy .timeline-highlight-icon {
    color: #d97706;
}

.timeline-highlight-text {
    font-size: 20px;
    color: var(--text-secondary);
    line-height: 1.55;
    margin: 0;
}

.timeline-highlight-text strong {
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Clubs, Cells & Committees Section
   -------------------------------------------------------------------------- */
.clubs-section {
    padding: 80px 0;
    background: #ffffff;
}

.club-grid-v2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 22px;
    margin-top: 40px;
}

.club-card-v2 {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius);
    padding: 26px 18px 22px;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.club-card-v2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: var(--transition-fast);
}

.club-card-v2:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: var(--card-hover-shadow);
}

.club-card-v2:hover::after {
    transform: scaleX(1);
}

.club-icon-wrap {
    width: 56px;
    height: 56px;
    background: rgba(49, 60, 153, 0.08);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    font-size: 22px;
    color: var(--primary-color);
    transition: var(--transition-smooth);
}

.club-card-v2:hover .club-icon-wrap {
    background: var(--primary-color);
    color: #ffffff;
    transform: rotate(360deg);
}

.club-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.club-card-est {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   CTA Section
   -------------------------------------------------------------------------- */
.milestone-cta-section {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    position: relative;
    overflow: hidden;
    color: #ffffff;
}

.milestone-cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(13, 243, 247, 0.15) 0%, rgba(0,0,0,0) 70%);
    border-radius: 50%;
}

.milestone-cta-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
    color: #ffffff;
}

.milestone-cta-text {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 650px;
    margin: 0 auto 28px;
}

.btn-cta-accent {
    background: var(--accent-color);
    color: var(--primary-dark);
    font-weight: 700;
    padding: 12px 32px;
    border-radius: 30px;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 14px;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-cta-accent:hover {
    background: #ffffff;
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(13, 243, 247, 0.4);
}

.btn-cta-outline {
    background: transparent;
    color: #ffffff;
    font-weight: 600;
    padding: 12px 30px;
    border-radius: 30px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    font-size: 14px;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-cta-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border-color: #ffffff;
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   Responsive Layout Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 991px) {
    .milestone-hero-title {
        font-size: 34px;
    }
    
    .milestone-hero-subtitle {
        font-size: 18px;
    }

    .milestone-timeline-v2::before,
    .milestone-timeline-line-active {
        left: 28px;
        transform: none;
    }

    .timeline-item-v2 {
        justify-content: flex-start !important;
        padding-left: 70px;
    }

    .timeline-node-year {
        left: 28px !important;
        transform: translate(-50%, -50%) !important;
        width: 48px;
        height: 48px;
        font-size: 13px;
    }

    .timeline-item-v2:hover .timeline-node-year {
        transform: translate(-50%, -50%) scale(1.1) !important;
    }

    .timeline-card-v2 {
        width: 100% !important;
        transform: translateY(30px) !important;
    }

    .timeline-card-v2::after {
        left: -8px !important;
        right: auto !important;
        border-left: 1px solid #e2e8f0 !important;
        border-right: none !important;
    }
}

@media (max-width: 576px) {
    .milestone-hero-banner {
        padding: 60px 0 40px;
    }

    .milestone-hero-title {
        font-size: 26px;
    }

    .timeline-item-v2 {
        padding-left: 55px;
    }

    .timeline-node-year {
        left: 20px !important;
        width: 40px;
        height: 40px;
        font-size: 11px;
    }

    .milestone-timeline-v2::before,
    .milestone-timeline-line-active {
        left: 20px;
    }

    .timeline-card-v2 {
        padding: 20px 18px;
    }

    .timeline-card-title {
        font-size: 17px;
    }

    .club-grid-v2 {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
}