/* Certificates Page Specific Styles */

/* Certificates Section - moved from header.php */
.certificates-section {
    padding: 8rem 2rem;
    background: linear-gradient(180deg, var(--dark-navy) 0%, var(--deep-blue) 100%);
}

.certificates-container {
    max-width: 1400px;
    margin: 0 auto;
    text-align: left;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 4rem;
}

/* Golden Ratio System */
:root {
    /* Golden Ratio System (φ = 1.618) - Core Navigation Variables */
    --golden-ratio: 1.618;
    --golden-ratio-inverse: 0.618;
    --nav-width-base: 100vw;
    --nav-height-base: 100vh;

    /* Dynamic Width Calculations for Responsive Sidebar */
    --nav-width-sm: calc(var(--nav-width-base) * var(--golden-ratio-inverse)); /* 61.8vw */
    --nav-width-md: calc(var(--nav-width-base) * calc(1 - var(--golden-ratio-inverse))); /* 38.2vw */
    --nav-width-lg: calc(var(--nav-width-base) * calc(1 - var(--golden-ratio-inverse) * 0.618)); /* 61.8% of 38.2% = 23.6% */

    /* Mobile Navigation Positioning */
    --nav-position-mobile-right: 0;
    --nav-position-mobile-left: auto;
}

/* Hero Section */
.certificates-hero {
    height: 50vh;
    min-height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--dark-navy) 0%, var(--deep-blue) 100%);
}

.certificates-hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
    z-index: 1;
}

.certificates-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        45deg,
        rgba(1, 44, 78, 0.8) 0%,
        rgba(1, 44, 78, 0.6) 50%,
        rgba(212, 175, 55, 0.2) 100%
    );
    z-index: 2;
}

.certificates-hero-content {
    position: relative;
    z-index: 3;
    text-align: left;
    padding: 0 2rem;
    max-width: 1000px;
    animation: fadeIn 1s ease-out;
}

.certificates-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.375rem, 5.7vw, 3.8rem);
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.certificates-hero-subtitle {
    font-size: clamp(1.1875rem, 2.85vw, 1.6625rem);
    font-weight: 300;
    color: var(--white);
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Certificates Grid Section */
.certificates-grid-section {
    padding: 8rem 2rem;
    background: var(--dark-navy);
}

.certificates-grid-container {
    max-width: 1200px;
    margin: 0 auto;
}

.certificates-grid-title {
    font-family: var(--font-heading);
    font-size: clamp(2.375rem, 4.75vw, 3.325rem);
    font-weight: 700;
    color: var(--gold);
    text-align: left;
    margin-bottom: 1rem;
    margin-left: 0;
}

.certificates-grid-subtitle {
    font-size: clamp(0.95rem, 1.9vw, 1.1875rem);
    font-weight: 300;
    color: var(--silver);
    text-align: left;
    margin-bottom: 5rem;
    max-width: 800px;
    margin-left: 0;
    margin-right: auto;
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 3rem;
}

/* Certificate Card Styles (matching certificates.php markup) */
.certificate-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 16px;
    padding: 3rem 2rem;
    text-align: left;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    outline: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
}

.certificate-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 36px rgba(212, 175, 55, 0.25);
    border-color: var(--gold);
}

.certificate-card:active {
    transform: translateY(-2px) scale(0.995);
}

.certificate-card:focus-visible {
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.55), 0 16px 30px rgba(212, 175, 55, 0.2);
    border-color: var(--gold);
}

.standard-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    color: var(--dark-navy);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 6px 18px rgba(212, 175, 55, 0.3);
    transition: transform 0.3s ease;
}

.certificate-card:hover .standard-icon {
    transform: scale(1.1) rotate(5deg);
}

.standard-name {
    font-family: var(--font-heading);
    font-size: 1.425rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 0.5rem;
}

.standard-description {
    font-size: var(--font-size-body);
    color: var(--silver);
    line-height: 1.5;
}

@media (max-width: 767px) {
    .certificate-item {
        padding: 1.5rem 1.25rem;
    }
}


.certificate-preview {
    width: 100%;
    height: 200px;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.certificate-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.certificate-info {
    padding: 2rem;
    text-align: left;
}


.certificate-issuer {
    font-size: 0.95rem;
    color: var(--silver);
    margin-bottom: 1rem;
}

.certificate-description {
    font-size: var(--font-size-body);
    line-height: 1.6;
    color: var(--white);
    text-align: justify;
    margin-bottom: 1.5rem;
}

.certificate-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.certificate-tag {
    padding: 0.3rem 0.8rem;
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold);
    border-radius: 20px;
    font-size: 0.76rem;
    transition: all 0.3s ease;
}

.certificate-card:hover .certificate-tag {
    background: rgba(212, 175, 55, 0.2);
}

/* Certificate Modal */
.certificate-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: linear-gradient(145deg, var(--dark-navy) 0%, var(--deep-blue) 100%);
    border-radius: 15px;
    width: 90%;
    max-width: 1000px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 3px solid var(--gold);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.certificate-modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 2rem;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    position: relative;
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1.71rem;
    font-weight: 600;
    color: var(--gold);
    text-align: left;
}

.modal-header p {
    font-size: var(--font-size-body);
    color: var(--silver);
    text-align: left;
    margin-top: 0.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    background: rgba(212, 175, 55, 0.1);
    border: 2px solid var(--gold);
    border-radius: 50%;
    color: var(--gold);
    font-size: 1.425rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--gold);
    color: var(--dark-navy);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
    overflow-y: auto;
    max-height: calc(90vh - 80px - 80px);
}

.certificate-viewer {
    width: 100%;
    height: 500px;
    background: var(--white);
    margin-bottom: 2rem;
    border-radius: 10px;
    overflow: hidden;
}

.certificate-viewer iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.certificate-details {
    color: var(--white);
    margin-bottom: 2rem;
}

.certificate-details h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--gold);
    margin-bottom: 0.5rem;
}

.certificate-details p {
    font-size: var(--font-size-body);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.modal-footer {
    padding: 2rem;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.modal-btn {
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.download-btn {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    color: var(--dark-navy);
    border: none;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

.close-btn {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--gold);
}

.close-btn:hover {
    background: var(--gold);
    color: var(--dark-navy);
}

/* Standards Section */
.standards-section {
    padding: 8rem 2rem;
    background: linear-gradient(180deg, var(--dark-navy) 0%, var(--deep-blue) 50%, var(--dark-navy) 100%);
}

.standards-container {
    max-width: 1200px;
    margin: 0 auto;
}

.standards-title {
    font-family: var(--font-heading);
    font-size: clamp(2.375rem, 4.75vw, 3.325rem);
    font-weight: 700;
    color: var(--gold);
    text-align: left;
    margin-bottom: 5rem;
}

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

.standard-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 3rem 2rem;
    text-align: left;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(212, 175, 55, 0.2);
    transition: all 0.4s ease;
}

.standard-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.3);
    border-color: var(--gold);
}

.standard-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.9rem;
    color: var(--dark-navy);
    transition: all 0.3s ease;
}

.standard-card:hover .standard-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 10px 30px rgba(212, 175, 55, 0.4);
}

.standard-name {
    font-family: var(--font-heading);
    font-size: 1.425rem;
    font-weight: 600;
    color: var(--gold);
    margin-bottom: 1rem;
}

.standard-description {
    font-size: var(--font-size-body);
    line-height: 1.6;
    color: var(--white);
}

/* Responsive Styles */
@media (max-width: 767px) {
    .certificates-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 2rem;
    }

    .certificate-card {
        padding: 2rem 1.5rem;
        min-height: 240px;
    }

    .standard-icon {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
    }

    .standard-name {
        font-size: 1.25rem;
    }

    .certificate-preview {
        height: 150px;
    }

    /* .modal-content {
        width: 95%;
    } */

    .certificate-viewer {
        height: 300px;
    }

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}