/**
 * CloudCore Main Stylesheet
 * Modern, mobile-first CSS with performance optimizations
 */

/* Custom Properties */
:root {
    --color-primary: #0A1F44;
    --color-accent: #06B6D4;
    --color-success: #10B981;
    --color-error: #EF4444;
    --transition-default: 200ms ease-in-out;
}

/* Screen Reader Only (Accessibility) */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.focus\:not-sr-only:focus {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Alpine.js cloak */
[x-cloak] {
    display: none !important;
}

/* Focus Styles for Accessibility */
*:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

a:focus, button:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Custom Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.4s ease-out forwards;
}

/* Delay classes for staggered animations */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Glassmorphism */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Card Hover Effect */
.card-hover {
    transition: transform var(--transition-default), box-shadow var(--transition-default);
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    text-align: center;
    border-radius: 0.5rem;
    transition: all var(--transition-default);
    cursor: pointer;
    min-height: 48px; /* Touch target size */
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(6, 182, 212, 0.2);
}

.btn-accent {
    background-color: var(--color-accent);
    color: white;
}

.btn-accent:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(6, 182, 212, 0.3);
}

/* Hero Section */
.hero-gradient {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e3a5f 100%);
}

.hero-overlay {
    position: relative;
}

.hero-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10, 31, 68, 0.9) 0%, rgba(6, 182, 212, 0.1) 100%);
    z-index: 1;
}

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

/* Service Cards */
.service-card {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-primary) 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* Form Styles */
.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    transition: all var(--transition-default);
    font-size: 1rem;
    min-height: 48px; /* Touch target */
}

.form-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.form-input:invalid:not(:placeholder-shown) {
    border-color: var(--color-error);
}

/* Loading Spinner */
.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    width: 24px;
    height: 24px;
    animation: spin 0.8s linear infinite;
}

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

/* Section Padding */
.section-padding {
    padding-top: 4rem;
    padding-bottom: 4rem;
}

@media (min-width: 768px) {
    .section-padding {
        padding-top: 6rem;
        padding-bottom: 6rem;
    }
}

/* Container Max Width */
.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
}

/* Scroll Fade-in */
.scroll-fade {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Tech Stack Animation */
.tech-item {
    transition: all 0.3s ease;
}

.tech-item:hover {
    transform: scale(1.1);
}

/* Responsive Utilities */
@media (max-width: 640px) {
    .hero-gradient {
        min-height: 500px;
    }
    
    h1 {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    h2 {
        font-size: clamp(1.5rem, 6vw, 2rem);
    }
    
    /* Ensure touch targets are at least 48px on mobile */
    button, a.btn, .btn {
        min-height: 48px;
        min-width: 48px;
    }
    
    /* Better spacing on mobile */
    .section-padding {
        padding-top: 3rem;
        padding-bottom: 3rem;
    }
}

/* Tablet Adjustments */
@media (min-width: 641px) and (max-width: 1024px) {
    .container {
        padding-left: 2rem;
        padding-right: 2rem;
    }
}

/* Performance: Reduce motion for animations on mobile */
@media (max-width: 768px) and (prefers-reduced-motion: no-preference) {
    .card-hover:hover {
        transform: translateY(-4px);
    }
}

/* Print Styles */
@media print {
    nav, footer, .no-print {
        display: none !important;
    }
}