/**
 * Stratos One Modal Component — Premium Case Study Design
 * Universal modal for images, galleries, PDFs, code, video, iframes
 * Enhanced with glassmorphism, smooth animations, and modern aesthetics
 *
 * @package Stratos_One
 */

/* ================================
   Modal Overlay — Enhanced with dynamic background
   ================================ */

.stratos-modal-overlay {
    position: fixed;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(7, 9, 12, 0.85) 0%, rgba(7, 9, 12, 0.95) 100%);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 2rem;
}

.stratos-modal-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(168, 85, 247, 0.06) 0%, transparent 50%);
    pointer-events: none;
    animation: modal-ambient-pulse 8s ease-in-out infinite;
}

@keyframes modal-ambient-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.stratos-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ================================
   Modal Container — Premium glassmorphism
   ================================ */

.stratos-modal {
    background: linear-gradient(135deg, rgba(19, 25, 36, 0.95) 0%, rgba(13, 17, 23, 0.98) 100%);
    border-radius: 20px;
    max-width: 900px;
    width: 100%;
    max-height: 92vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.92) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: 
        0 0 0 1px rgba(255, 255, 255, 0.08),
        0 40px 80px -20px rgba(0, 0, 0, 0.7),
        0 0 100px -20px rgba(59, 130, 246, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
}

.stratos-modal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--color-accent-primary) 20%, 
        var(--color-cyan) 50%, 
        var(--color-accent-primary) 80%, 
        transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.stratos-modal-overlay.active .stratos-modal {
    transform: scale(1) translateY(0);
}

.stratos-modal-overlay.active .stratos-modal::before {
    opacity: 1;
}

/* ================================
   Modal Header — Enhanced with gradient border
   ================================ */

.stratos-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    flex-shrink: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 100%);
    position: relative;
}

.stratos-modal-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 2rem;
    right: 2rem;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(59, 130, 246, 0.3) 50%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stratos-modal-overlay.active .stratos-modal-header::after {
    opacity: 1;
}

.stratos-modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stratos-modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.04) 100%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-base);
    padding: 0;
    z-index: 10;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.stratos-modal-close:hover {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(239, 68, 68, 0.1) 100%);
    border-color: var(--color-error);
    transform: rotate(90deg) scale(1.05);
    box-shadow: 
        0 0 0 1px rgba(239, 68, 68, 0.3),
        0 8px 32px rgba(239, 68, 68, 0.3);
}

.stratos-modal-close svg {
    width: 20px;
    height: 20px;
    fill: #ffffff;
    transition: all var(--transition-fast);
}

.stratos-modal-close:hover svg {
    fill: #ffffff;
}

.stratos-modal-close:active {
    transform: rotate(90deg) scale(0.95);
}

/* ================================
   Modal Body — Smooth scrolling
   ================================ */

.stratos-modal-body {
    flex: 1;
    overflow: auto;
    padding: 2rem;
    min-height: 200px;
    scrollbar-width: thin;
    scrollbar-color: rgba(59, 130, 246, 0.3) transparent;
}

.stratos-modal-body::-webkit-scrollbar {
    width: 8px;
}

.stratos-modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.stratos-modal-body::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.3) 0%, rgba(59, 130, 246, 0.1) 100%);
    border-radius: 4px;
}

.stratos-modal-body::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, rgba(59, 130, 246, 0.5) 0%, rgba(59, 130, 246, 0.2) 100%);
}

.stratos-modal-content {
    position: relative;
}

/* ================================
   Content Types
   ================================ */

/* Image */
.stratos-modal-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

/* Gallery */
.stratos-modal-gallery {
    position: relative;
}

.stratos-modal-gallery img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

/* Code */
.stratos-modal-code {
    background: #0d0f12;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
    overflow-x: auto;
    font-family: 'Fira Code', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: #e5e7eb;
}

.stratos-modal-code code {
    background: none;
    padding: 0;
}

/* Video */
.stratos-modal-video {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    border-radius: 8px;
    overflow: hidden;
}

.stratos-modal-video iframe,
.stratos-modal-video video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Iframe */
.stratos-modal-iframe {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: 8px;
}

/* PDF */
.stratos-modal-pdf {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: 8px;
}

/* Inline content */
.stratos-modal-inline {
    color: #e5e7eb;
    line-height: 1.7;
}

.stratos-modal-inline h1,
.stratos-modal-inline h2,
.stratos-modal-inline h3 {
    color: #ffffff;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.stratos-modal-inline p {
    margin-bottom: 1rem;
}

/* ================================
   Modal Footer (Navigation)
   ================================ */

.stratos-modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    gap: 1rem;
}

.stratos-modal-prev,
.stratos-modal-next {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #e5e7eb;
    padding: 0.75rem 1.25rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.stratos-modal-prev:hover,
.stratos-modal-next:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
}

.stratos-modal-prev svg,
.stratos-modal-next svg {
    width: 18px;
    height: 18px;
}

.stratos-modal-prev:disabled,
.stratos-modal-next:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.stratos-modal-counter {
    font-size: 0.9rem;
    color: #9ca3af;
    font-weight: 500;
}

/* ================================
   Loader
   ================================ */

.stratos-modal-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 3rem;
    color: #9ca3af;
}

.stratos-modal-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: #4da6ff;
    border-radius: 50%;
    animation: stratos-modal-spin 0.8s linear infinite;
}

@keyframes stratos-modal-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ================================
   Responsive
   ================================ */

@media (max-width: 768px) {
    .stratos-modal-overlay {
        padding: 1rem;
    }

    .stratos-modal {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 8px;
    }

    .stratos-modal-header {
        padding: 0.75rem 1rem;
    }

    .stratos-modal-title {
        font-size: 1.1rem;
    }

    .stratos-modal-body {
        padding: 1rem;
    }

    .stratos-modal-footer {
        padding: 0.75rem 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .stratos-modal-prev,
    .stratos-modal-next {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    .stratos-modal-counter {
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: 0.5rem;
    }

    .stratos-modal-iframe,
    .stratos-modal-pdf {
        height: 400px;
    }
}

/* ================================
   Accessibility
   ================================ */

.stratos-modal-overlay[aria-hidden="true"] {
    pointer-events: none;
}

.stratos-modal:focus {
    outline: 2px solid #4da6ff;
    outline-offset: 2px;
}

.stratos-modal-close:focus {
    outline: 2px solid #4da6ff;
    outline-offset: 2px;
}

/* Body scroll lock when modal is open */
body.modal-open {
    overflow: hidden;
}