/*
* File: style.css
* Design System: Modern
* Trend: Curved Grids
* Color Scheme: Triadic
* Animation Style: Non-linear Movements
*/

/* ---------------------------------- */
/*          CSS Variables             */
/* ---------------------------------- */
:root {
    /* Triadic Color Scheme */
    --primary-color: #0D47A1;  /* Deep, Professional Blue */
    --secondary-color: #2CA58D; /* Vibrant Teal/Green */
    --accent-color: #F4511E;   /* Warm, Energetic Orange */

    /* Neutral Colors */
    --text-dark: #212121;      /* For body text on light backgrounds */
    --text-light: #FFFFFF;     /* For text on dark backgrounds */
    --bg-light: #F4F7F6;       /* Light gray for sections */
    --bg-dark: var(--primary-color);
    --border-color: #e0e0e0;
    
    /* Typography */
    --font-heading: 'Roboto', sans-serif;
    --font-body: 'Lato', sans-serif;
    
    /* Spacing & Sizing */
    --header-height: 80px;
    --container-width: 1200px;
    --container-padding: 0 20px;
    --border-radius: 8px;
    --section-padding: 6rem 0;

    /* Transitions & Animations */
    --transition-speed: 0.4s;
    --timing-function: cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* ---------------------------------- */
/*          Global Styles             */
/* ---------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--text-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding: var(--container-padding);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 900;
    line-height: 1.2;
    color: var(--text-dark);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.05);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
p { margin-bottom: 1rem; }
a { color: var(--secondary-color); text-decoration: none; transition: color var(--transition-speed) ease; }
a:hover { color: var(--accent-color); }

img {
    max-width: 100%;
    height: auto;
    display: block;
}

section {
    padding: var(--section-padding);
    overflow: hidden; /* Prevents horizontal scroll from skewed elements */
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 900;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: -2rem auto 3rem;
    color: #555;
    font-size: 1.1rem;
}

/* ---------------------------------- */
/*          Header & Navigation       */
/* ---------------------------------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: var(--header-height);
    transition: all var(--transition-speed) var(--timing-function);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary-color);
    text-decoration: none;
}

.main-nav ul {
    display: flex;
    list-style: none;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    font-family: var(--font-body);
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    padding: 10px 0;
    position: relative;
    transition: color var(--transition-speed) ease;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--secondary-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-speed) var(--timing-function);
}

.main-nav a:hover {
    color: var(--secondary-color);
}
.main-nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.burger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.burger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 5px 0;
    transition: all var(--transition-speed) ease;
}

/* ---------------------------------- */
/*          Global Components         */
/* ---------------------------------- */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-speed) var(--timing-function);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(44, 165, 141, 0.4);
}

.btn-primary:hover {
    background-color: var(--accent-color);
    color: var(--text-light);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(244, 81, 30, 0.5);
}

.btn-secondary {
    background-color: transparent;
    color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: var(--secondary-color);
    color: var(--text-light);
}

/* ---------------------------------- */
/*          Hero Section              */
/* ---------------------------------- */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-light);
    padding: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(13, 71, 161, 0.7) 0%, rgba(13, 71, 161, 0.4) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-content h1 {
    color: var(--text-light);
    font-size: 4.5rem;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.3rem;
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------------------------------- */
/*       Portfolio Section (Courses)  */
/* ---------------------------------- */
#portfolio {
    background-color: var(--bg-light);
}

.curved-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    perspective: 1500px;
}

.card {
    background: var(--text-light);
    border-radius: var(--border-radius);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: transform var(--transition-speed) var(--timing-function), box-shadow var(--transition-speed) var(--timing-function);
    display: flex;
    flex-direction: column;
    text-align: center;
}

.card:hover {
    transform: translateY(-10px) rotateX(5deg) rotateY(-5deg);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.card-image {
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-speed) ease;
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card-content h3 {
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.card-content p {
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

/* ---------------------------------- */
/*      Sustainability Section        */
/* ---------------------------------- */
.sustainability-section {
    position: relative;
    color: var(--text-light);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
}

.sustainability-section .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(13, 71, 161, 0.85), rgba(44, 165, 141, 0.85));
    z-index: 1;
}

.sustainability-section .container {
    position: relative;
    z-index: 2;
}

.sustainability-section .section-title, .sustainability-section .section-subtitle {
    color: var(--text-light);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

.info-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    text-align: center;
}

.info-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    transition: background var(--transition-speed) ease;
}

.info-card:hover {
    background: rgba(255, 255, 255, 0.2);
}

.info-card-icon {
    margin-bottom: 1.5rem;
}

.info-card-icon svg {
    width: 48px;
    height: 48px;
    stroke: var(--text-light);
}

.info-card h3 {
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* ---------------------------------- */
/*          Awards Section            */
/* ---------------------------------- */
.awards-section {
    background-color: var(--text-light);
}

.awards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.award-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    border-left: 5px solid var(--secondary-color);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.award-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1.5rem;
    border: 4px solid var(--text-light);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.award-card blockquote {
    font-size: 1.1rem;
    font-style: italic;
    border: none;
    padding: 0;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.award-card cite {
    font-weight: 700;
    color: var(--primary-color);
}

/* ---------------------------------- */
/*         Accolades & FAQ            */
/* ---------------------------------- */
#accolades {
    background: var(--bg-light);
}

.accolades-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.testimonial {
    margin-bottom: 2rem;
    padding-left: 1.5rem;
    border-left: 3px solid var(--secondary-color);
}

.testimonial p {
    font-style: italic;
    margin-bottom: 0.5rem;
}
.testimonial span {
    font-weight: 700;
    color: var(--primary-color);
}

.accordion-item {
    background: var(--text-light);
    margin-bottom: 10px;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.accordion-header {
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    padding: 1.2rem;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--text-dark);
    position: relative;
    transition: background-color var(--transition-speed) ease;
}
.accordion-header:hover {
    background-color: #f0f0f0;
}

.accordion-header::after {
    content: '+';
    position: absolute;
    right: 20px;
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform var(--transition-speed) var(--timing-function);
}

.accordion-header.active::after {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) ease-in-out, padding var(--transition-speed) ease-in-out;
}

.accordion-content p {
    padding: 0 1.2rem 1.2rem;
    margin-bottom: 0;
}

/* ---------------------------------- */
/*      External Resources Section    */
/* ---------------------------------- */
.external-resources-section {
    background-color: var(--text-light);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.resource-card {
    display: block;
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-speed) var(--timing-function);
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--secondary-color);
}

.resource-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.resource-card p {
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: #555;
}

.resource-card .resource-url {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--secondary-color);
}

/* ---------------------------------- */
/*          Contact Section           */
/* ---------------------------------- */
.contact-section {
    background-color: var(--bg-light);
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    position: relative;
    margin-bottom: 2rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--text-light);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-dark);
    transition: border-color var(--transition-speed) ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(44, 165, 141, 0.2);
}

.form-group label {
    position: absolute;
    top: 15px;
    left: 15px;
    color: #999;
    pointer-events: none;
    transition: all var(--transition-speed) ease;
}

.form-group input:focus + label,
.form-group input:valid + label,
.form-group textarea:focus + label,
.form-group textarea:valid + label {
    top: -10px;
    left: 12px;
    font-size: 0.8rem;
    color: var(--primary-color);
    background: var(--bg-light);
    padding: 0 5px;
}

.contact-form button[type="submit"] {
    width: 100%;
    border-radius: var(--border-radius);
}

/* ---------------------------------- */
/*             Footer                 */
/* ---------------------------------- */
.site-footer {
    background-color: var(--primary-color);
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column h4 {
    color: var(--text-light);
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
}

.footer-column ul {
    list-style: none;
}
.footer-column li {
    margin-bottom: 0.8rem;
}
.footer-column a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}
.footer-column a:hover {
    color: var(--text-light);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    font-size: 0.9rem;
}

/* ---------------------------------- */
/*         Other Pages Styles         */
/* ---------------------------------- */
.page-container {
    padding-top: calc(var(--header-height) + 50px);
    padding-bottom: 50px;
    min-height: 80vh;
}
.page-container h1 {
    margin-bottom: 2rem;
    color: var(--primary-color);
}
.page-container p, .page-container ul, .page-container li {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.success-page-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    background-color: var(--bg-light);
}
.success-container {
    background: var(--text-light);
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.success-container h1 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
}
.success-container a {
    color: var(--accent-color);
    font-weight: 700;
}


/* ---------------------------------- */
/*          Responsiveness            */
/* ---------------------------------- */
@media (max-width: 992px) {
    h1 { font-size: 3rem; }
    .hero-content h1 { font-size: 3.5rem; }
    .accolades-content { grid-template-columns: 1fr; gap: 3rem; }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
        --section-padding: 4rem 0;
    }
    h1 { font-size: 2.5rem; }
    .hero-content h1 { font-size: 3rem; }
    .hero-content p { font-size: 1.1rem; }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--primary-color);
        display: flex;
        justify-content: center;
        align-items: center;
        transition: right var(--transition-speed) var(--timing-function);
    }
    .main-nav.active {
        right: 0;
    }
    .main-nav ul {
        flex-direction: column;
        text-align: center;
    }
    .main-nav li {
        margin: 1.5rem 0;
    }
    .main-nav a {
        font-size: 1.5rem;
        color: var(--text-light);
    }
    .main-nav a:hover, .main-nav a:hover::after {
        color: var(--secondary-color);
        background: none;
        transform: none;
    }
    .burger-menu {
        display: block;
    }
    .burger-menu.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .burger-menu.active span:nth-child(2) {
        opacity: 0;
    }
    .burger-menu.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .awards-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
}

@media (max-width: 480px) {
    .curved-grid { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 2.5rem; }
}