/* ==========================================================================
   AKHIL ACADEMY - Master Premium Stylesheet
   ========================================================================== */

:root {
    --primary-blue: #0062AC;
    --primary-red: #D21A1A;
    --accent-gold: #D4AF37;
    --dark-slate: #1C2434;
    --light-gray: #F8F9FA;
    --mid-gray: #E9ECEF;
    --body-font: 'Inter', sans-serif;
    --heading-font: 'Poppins', sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

body {
    font-family: var(--body-font);
    color: var(--dark-slate);
    background-color: #FFFFFF;
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--heading-font);
    weight: 700;
}

/* Preloader UI */
#preloader {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background-color: #FFFFFF;
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease;
}
.loader-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--mid-gray);
    border-top: 5px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Header & Navigation */
.top-bar {
    background-color: var(--dark-slate);
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.875rem;
    padding: 8px 0;
}
.top-bar a {
    color: #FFFFFF;
    text-decoration: none;
    transition: var(--transition-smooth);
}
.top-bar a:hover {
    color: var(--accent-gold);
}

.main-navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    transition: var(--transition-smooth);
    padding: 15px 0;
}
.main-navbar.sticky-nav {
    position: fixed;
    top: 0; width: 100%; z-index: 1000;
    padding: 10px 0;
    animation: slideDown 0.4s ease-out;
}
@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.brand-logo {
    height: 55px;
    width: auto;
}
.nav-link {
    font-weight: 600;
    color: var(--dark-slate) !important;
    padding: 10px 15px !important;
    transition: var(--transition-smooth);
}
.nav-link:hover, .nav-link.active {
    color: var(--primary-blue) !important;
}

/* Premium Buttons */
.btn-premium-blue {
    background: linear-gradient(135deg, var(--primary-blue), #004B84);
    color: #FFFFFF;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 6px;
    border: none;
    box-shadow: 0 4px 15px rgba(0, 98, 172, 0.3);
    transition: var(--transition-smooth);
}
.btn-premium-blue:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 98, 172, 0.4);
    color: #FFFFFF;
}

.btn-premium-red {
    background: linear-gradient(135deg, var(--primary-red), #B01212);
    color: #FFFFFF;
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 6px;
    border: none;
    box-shadow: 0 4px 15px rgba(210, 26, 26, 0.3);
    transition: var(--transition-smooth);
}
.btn-premium-red:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(210, 26, 26, 0.4);
    color: #FFFFFF;
}

/* Hero Section */
.hero-slider-wrap {
    position: relative;
    overflow: hidden;
    background-color: var(--dark-slate);
}
.hero-slide {
    min-height: 650px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}
.hero-slide::before {
    content: '';
    position: absolute;
    top:0; left:0; width:100%; height:100%;
    background: linear-gradient(90deg, rgba(28,36,52,0.95) 0%, rgba(28,36,52,0.5) 100%);
}
.hero-content {
    position: relative;
    z-index: 10;
    color: #FFFFFF;
}

/* Sections Global Structure */
.section-padding {
    padding: 85px 0;
}
.bg-light-section {
    background-color: var(--light-gray);
}
.section-title-wrap h2 {
    font-size: 2.5rem;
    position: relative;
    margin-bottom: 20px;
    font-weight: 800;
}
.section-title-wrap h2 span {
    color: var(--primary-blue);
}

/* Component Cards */
.feature-card-premium {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.03);
    border-bottom: 4px solid transparent;
    transition: var(--transition-smooth);
}
.feature-card-premium:hover {
    transform: translateY(-10px);
    border-bottom: 4px solid var(--primary-red);
    box-shadow: 0 15px 40px rgba(0,0,0,0.08);
}
.icon-box-shape {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(0, 98, 172, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    color: var(--primary-blue);
    font-size: 1.75rem;
}

.course-card-premium {
    background: #FFFFFF;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
    border: 1px solid var(--mid-gray);
    transition: var(--transition-smooth);
}
.course-card-premium:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

/* Stats Counter Badge */
.stat-box {
    text-align: center;
    padding: 30px;
}
.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 5px;
}
.stat-number::after {
    content: '+';
    color: var(--accent-gold);
}

/* Accordion Architecture */
.accordion-item {
    border: none;
    margin-bottom: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    border-radius: 8px !important;
    overflow: hidden;
}
.accordion-button:not(.collapsed) {
    background-color: rgba(0, 98, 172, 0.05);
    color: var(--primary-blue);
}

/* System Callouts (Sticky Interfaces) */
.floating-whatsapp {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 32px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    z-index: 9999;
    transition: var(--transition-smooth);
}
.floating-whatsapp:hover {
    transform: scale(1.1);
    color: white;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--dark-slate);
    color: white;
    border-radius: 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    z-index: 999;
    transition: var(--transition-smooth);
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* Footer Implementation */
.footer-dark {
    background-color: #0F141E;
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 30px;
    font-size: 0.95rem;
}
.footer-dark h4 {
    color: #FFFFFF;
    font-weight: 700;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}
.footer-dark h4::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0; width: 40px; height: 3px;
    background-color: var(--primary-red);
}
.footer-links list-unstyled li {
    margin-bottom: 12px;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition-smooth);
}
.footer-links a:hover {
    color: var(--accent-gold);
    padding-left: 5px;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 30px;
    margin-top: 50px;
    font-size: 0.875rem;
}