/* Modern SaaS Portfolio - Styles */
::-webkit-scrollbar { display: none; }
* {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
body { font-family: 'Inter', sans-serif; }

/* Performance Optimizations */
img {
    content-visibility: auto;
}

.project-card, .testimonial-card, .animate-float {
    will-change: transform;
    contain: layout style paint;
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

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

.animate-slideIn {
    animation: slideIn 0.6s ease-out forwards;
}

/* ========================================
   CARD STYLES
   ======================================== */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.15);
}

.gradient-border {
    position: relative;
    background: linear-gradient(145deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
    border: 1px solid transparent;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(145deg, #6366f1, #8b5cf6);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

/* ========================================
   SKILL BARS
   ======================================== */
.skill-bar {
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
    background: #e5e7eb;
}

.skill-bar-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 1s ease-out;
}

/* ========================================
   TIMELINE STYLES
   ======================================== */
.timeline-dot {
    position: relative;
    z-index: 10;
}

.timeline-dot::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
}

/* ========================================
   PROJECT CARDS
   ======================================== */
.project-card {
    transition: all 0.3s ease;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px rgba(99, 102, 241, 0.15);
}

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

.project-image {
    transition: transform 0.5s ease;
}

/* ========================================
   FORM STYLES
   ======================================== */
.form-input {
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ========================================
   BUTTON STYLES
   ======================================== */
.btn-primary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

.btn-secondary {
    border: 2px solid #6366f1;
    color: #6366f1;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #6366f1;
    color: white;
}

/* ========================================
   TESTIMONIAL CARDS
   ======================================== */
.testimonial-card {
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

/* ========================================
   GRADIENT BACKGROUNDS
   ======================================== */
.gradient-indigo {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.gradient-purple {
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
}

.gradient-blue {
    background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
}

.gradient-green {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

/* ========================================
   SECTION BACKGROUNDS
   ======================================== */
.bg-pattern {
    background-image:
        radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.03) 0%, transparent 50%);
}

/* ========================================
   RESPONSIVE - MOBILE
   ======================================== */
@media (max-width: 640px) {
    /* Hero Section */
    #hero {
        min-height: auto;
        padding: 4rem 1rem;
    }

    #hero h1 {
        font-size: 2rem;
        line-height: 1.2;
    }

    /* Section headings */
    section h2 {
        font-size: 1.75rem;
    }

    /* Cards */
    .card-hover:hover {
        transform: translateY(-4px);
    }

    /* Timeline - Stack vertically on mobile */
    .timeline-item {
        flex-direction: column !important;
    }

    .timeline-item > div {
        width: 100% !important;
        text-align: left !important;
        padding: 0 !important;
    }

    /* General padding adjustments */
    section {
        padding: 3rem 1rem;
    }

    /* Footer */
    #footer .grid {
        gap: 2rem;
    }
}

/* ========================================
   RESPONSIVE - TABLET
   ======================================== */
@media (min-width: 641px) and (max-width: 1024px) {
    /* Hero Section */
    #hero h1 {
        font-size: 2.5rem;
    }

    /* Section headings */
    section h2 {
        font-size: 2.25rem;
    }

    /* Grid adjustments */
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* General padding */
    section {
        padding: 4rem 1.5rem;
    }
}

/* ========================================
   RESPONSIVE - DESKTOP
   ======================================== */
@media (min-width: 1025px) {
    /* Hero Section */
    #hero h1 {
        font-size: 3.5rem;
    }

    /* Section headings */
    section h2 {
        font-size: 3rem;
    }

    /* Cards hover effects */
    .card-hover:hover {
        transform: translateY(-8px);
        box-shadow: 0 25px 50px rgba(99, 102, 241, 0.15);
    }

    /* General padding */
    section {
        padding: 6rem 2rem;
    }
}

/* ========================================
   ACCESSIBILITY & REDUCED MOTION
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   TOUCH DEVICE OPTIMIZATIONS
   ======================================== */
@media (hover: none) {
    .card-hover:hover {
        transform: none;
        box-shadow: none;
    }

    /* Larger touch targets */
    button, a {
        min-height: 44px;
        min-width: 44px;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-gradient {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-glow {
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.3);
}

.backdrop-blur {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ========================================
   LOADING STATES
   ======================================== */
.skeleton {
    background: linear-gradient(90deg,
        #f3f4f6 25%,
        #e5e7eb 50%,
        #f3f4f6 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 0.5rem;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ========================================
   CUSTOM SCROLLBAR (for browsers that show it)
   ======================================== */
.custom-scrollbar::-webkit-scrollbar {
    width: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #6366f1, #8b5cf6);
    border-radius: 4px;
}

.custom-scrollbar::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #4f46e5, #7c3aed);
}