/* ============================================================
   RAHUL RANJAN PORTFOLIO  —  DESIGN SYSTEM v2
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ─── Design tokens ───────────────────────────────────────── */
:root {
    --primary:       #2563EB;
    --primary-dark:  #1D4ED8;
    --primary-50:    #EFF6FF;
    --primary-100:   #DBEAFE;
    --secondary:     #059669;
    --secondary-50:  #ECFDF5;
    --accent:        #7C3AED;
    --dark:          #0F172A;
    --dark-2:        #1E293B;
    --dark-3:        #334155;
    --light:         #F8FAFC;
    --light-2:       #F1F5F9;
    --border:        #E2E8F0;
    --border-dark:   rgba(255,255,255,.07);
    --text-1:        #0F172A;
    --text-2:        #475569;
    --text-3:        #94A3B8;
    --radius-sm:     8px;
    --radius-md:     14px;
    --radius-lg:     22px;
    --radius-xl:     32px;
    --shadow-xs:     0 1px 2px rgba(0,0,0,.05);
    --shadow-sm:     0 1px 6px rgba(0,0,0,.06), 0 2px 12px rgba(0,0,0,.04);
    --shadow-md:     0 4px 24px rgba(0,0,0,.09), 0 1px 4px rgba(0,0,0,.05);
    --shadow-lg:     0 16px 56px rgba(0,0,0,.13), 0 4px 16px rgba(0,0,0,.07);
    --shadow-glow:   0 0 0 4px rgba(37,99,235,.15), 0 8px 32px rgba(37,99,235,.25);
    --ease:          cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce:   cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ─── Base ────────────────────────────────────────────────── */
html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--light);
    color: var(--text-1);
    overflow-x: hidden;
    width: 100%;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
}

/* ─── Headings ────────────────────────────────────────────── */
h1, h2, h3 {
    font-family: 'Syne', sans-serif;
    letter-spacing: -0.025em;
}

/* ─── Typography helpers ──────────────────────────────────── */
.gradient-text {
    background: linear-gradient(135deg, #60A5FA 0%, #34D399 60%, #A78BFA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-shadow { text-shadow: 0 2px 24px rgba(0,0,0,.45); }

/* ─── Section badge ───────────────────────────────────────── */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    border-radius: 100px;
    background: var(--primary-50);
    color: var(--primary);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: 1px solid var(--primary-100);
    margin-bottom: 14px;
}

.dark .section-badge {
    background: rgba(37,99,235,.15);
    border-color: rgba(37,99,235,.3);
    color: #93C5FD;
}

/* ─── Hero background ─────────────────────────────────────── */
.hero-bg {
    background:
        radial-gradient(ellipse 90% 55% at 50% -5%,  rgba(37,99,235,.5)  0%, transparent 65%),
        radial-gradient(ellipse 55% 45% at 88% 92%,  rgba(5,150,105,.28) 0%, transparent 60%),
        radial-gradient(ellipse 40% 35% at 10% 80%,  rgba(124,58,237,.18) 0%, transparent 55%),
        #0F172A;
}

/* keep old class working */
.gradient-bg { background: var(--hero-bg, #0F172A); }

/* ─── Navigation ──────────────────────────────────────────── */
header {
    background: rgba(255,255,255,.92) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid var(--border) !important;
    box-shadow: 0 1px 0 rgba(0,0,0,.04) !important;
}

.dark header {
    background: rgba(15,23,42,.92) !important;
    border-bottom-color: var(--border-dark) !important;
}

.nav-link {
    position: relative;
    color: var(--text-2);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 7px 13px;
    border-radius: var(--radius-sm);
    transition: color .2s var(--ease), background .2s var(--ease);
    white-space: nowrap;
    text-decoration: none;
}

.nav-link:hover { color: var(--primary); background: var(--primary-50); }
.nav-link.active { color: var(--primary); background: var(--primary-50); font-weight: 600; }

.dark .nav-link { color: var(--text-3); }
.dark .nav-link:hover, .dark .nav-link.active {
    color: #93C5FD;
    background: rgba(37,99,235,.12);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 22px;
    background: var(--primary);
    color: #fff !important;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    transition: background .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease-bounce);
    box-shadow: 0 2px 10px rgba(37,99,235,.32);
}

.nav-cta:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

/* Mobile menu */
#mobile-menu {
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transition: transform .3s var(--ease), opacity .3s var(--ease);
    position: fixed;
    top: 64px;
    right: 0;
    width: 52%;
    max-width: 280px;
    z-index: 50;
    transform: translateX(100%);
    opacity: 0;
}

/* Keep in DOM so CSS transition can play; override Tailwind display:none */
#mobile-menu.hidden { display: block !important; transform: translateX(100%); opacity: 0; pointer-events: none; visibility: hidden; }
#mobile-menu:not(.hidden) { transform: translateX(0); opacity: 1; pointer-events: auto; visibility: visible; }

/* Always hide on desktop regardless of JS state */
@media (min-width: 768px) {
    #mobile-menu,
    #mobile-menu.hidden { display: none !important; pointer-events: none; }
}

.dark #mobile-menu {
    background: rgba(15,23,42,.96);
    border-color: var(--border-dark);
}

#mobile-menu .nav-link {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    margin: 2px 0;
}

body.menu-open { overflow: hidden; }
body.menu-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,.4);
    z-index: 40;
}

/* ─── Buttons ─────────────────────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    background: var(--primary);
    color: #fff;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease-bounce);
    box-shadow: 0 4px 18px rgba(37,99,235,.32);
}
.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background: rgba(255,255,255,.08);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,.3);
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease-bounce);
    backdrop-filter: blur(6px);
}
.btn-outline:hover {
    background: rgba(255,255,255,.16);
    border-color: rgba(255,255,255,.7);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease-bounce), box-shadow .2s var(--ease);
}
.btn-secondary:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* ─── Profile picture ─────────────────────────────────────── */
.profile-pic-container {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Spinning gradient ring */
.profile-ring {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    background: conic-gradient(from 0deg at 50% 50%,
        #2563EB 0deg, #059669 120deg, #7C3AED 240deg, #2563EB 360deg);
    animation: ring-spin 8s linear infinite;
}

.profile-ring::after {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: #0F172A;
}

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

.profile-pic {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(255,255,255,.15);
    display: block;
    transition: transform .5s var(--ease);
}

.profile-pic-container:hover .profile-pic { transform: scale(1.04); }

/* Remove old border element */
.profile-pic-border { display: none; }

/* ─── Cards / glass-effect ────────────────────────────────── */
.glass-effect {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow .25s var(--ease), transform .25s var(--ease), border-color .25s var(--ease);
}

.glass-effect:not(input):not(textarea):not(select):not(form):hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
    border-color: var(--primary-100);
}

.dark .glass-effect {
    background: var(--dark-2);
    border-color: var(--border-dark);
}

.dark .glass-effect:not(input):not(textarea):not(select):not(form):hover {
    border-color: rgba(37,99,235,.25);
}

/* Service card icons in About */
.glass-effect i { transition: transform .3s var(--ease-bounce); }
.glass-effect:hover i { transform: scale(1.15) rotate(-5deg); }

/* ─── Skill list rows ──────────────────────────────────────── */
.skill-row-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 12px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: .03em;
}

/* ─── Project cards ───────────────────────────────────────── */
.project-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow .3s var(--ease), transform .3s var(--ease), border-color .3s var(--ease);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-7px);
    border-color: var(--primary-100);
}

.dark .project-card {
    background: var(--dark-2);
    border-color: var(--border-dark);
}

.dark .project-card:hover { border-color: rgba(37,99,235,.3); }

.project-card img { transition: transform .5s var(--ease); }
.project-card:hover img { transform: scale(1.04); }

.project-card [data-gallery-thumbs] img {
    opacity: .85;
    transition: opacity .2s, transform .2s;
    border-radius: 6px;
}
.project-card [data-gallery-thumbs] img:hover { opacity: 1; transform: translateY(-2px); }

/* ─── Snow ────────────────────────────────────────────────── */
.snow {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
}

.snowflake {
    filter: drop-shadow(0 0 2px rgba(255,255,255,.3));
    animation: snowflake-float 3s ease-in-out infinite alternate;
}

@keyframes snowflake-float {
    from { transform: translateY(0) rotate(0deg) scale(1); }
    to   { transform: translateY(10px) rotate(5deg) scale(1.05); }
}

/* ─── Custom cursor ───────────────────────────────────────── */
.cursor-hidden { cursor: none; }

.cursor-dot,
.cursor-dot-outline {
    pointer-events: none;
    position: fixed;
    top: 0; left: 0;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    z-index: 9999;
    transition: opacity .3s;
}

.cursor-dot {
    width: 8px; height: 8px;
    background: var(--primary);
    box-shadow: 0 0 10px var(--primary), 0 0 24px var(--primary);
}

.cursor-dot-outline {
    width: 36px; height: 36px;
    background: rgba(37,99,235,.08);
    border: 2px solid rgba(37,99,235,.45);
    transition: transform .18s ease-out, opacity .3s;
    z-index: 9998;
}

.cursor-hover .cursor-dot { transform: translate(-50%,-50%) scale(2); background: var(--secondary); }
.cursor-hover .cursor-dot-outline { transform: translate(-50%,-50%) scale(1.5); border-color: var(--secondary); }
.cursor-click .cursor-dot { transform: translate(-50%,-50%) scale(.5); }
.cursor-click .cursor-dot-outline { transform: translate(-50%,-50%) scale(.8); }

.cursor-trail {
    position: fixed;
    width: 5px; height: 5px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    pointer-events: none;
    opacity: .45;
    z-index: 9998;
}

/* ─── Progress shimmer ────────────────────────────────────── */
[data-progress-bar] { position: relative; overflow: hidden; }
[data-progress-bar]::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,.5) 50%, transparent 100%);
    animation: shimmer 1.8s infinite;
}

@keyframes shimmer {
    from { transform: translateX(-100%); }
    to   { transform: translateX(300%); }
}

/* ─── FAQ ─────────────────────────────────────────────────── */
.faq-card {
    border-left: 4px solid transparent;
    transition: border-color .35s var(--ease), box-shadow .35s var(--ease), transform .2s var(--ease);
}
.faq-card:hover { transform: translateX(3px); }
.faq-card[open] {
    border-left-color: var(--primary);
    box-shadow: 0 8px 32px rgba(37,99,235,.12);
}
.faq-card summary { list-style: none; }
.faq-card summary::-webkit-details-marker { display: none; }

.faq-toggle-icon {
    transition: transform .35s var(--ease), background-color .3s, color .3s;
    min-width: 2rem;
}
.faq-card[open] .faq-toggle-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-card[open] .faq-num-badge  { background: var(--primary); color: #fff; }

.faq-body { animation: faq-in .35s var(--ease) forwards; }
@keyframes faq-in {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dark .faq-card { background: var(--dark-2); border-color: var(--border-dark); }
.dark .faq-card[open] { border-left-color: var(--primary); box-shadow: 0 8px 32px rgba(37,99,235,.18); }

/* ─── Forms ───────────────────────────────────────────────── */
input, textarea, select,
input:hover, textarea:hover, select:hover {
    transform: none !important;
    transition: border-color .2s, box-shadow .2s;
}
input:focus, textarea:focus {
    box-shadow: 0 0 0 3px rgba(37,99,235,.14) !important;
    border-color: var(--primary) !important;
    outline: none;
}

/* ─── Modal ───────────────────────────────────────────────── */
.modal-open { overflow: hidden; }

/* ─── Skill section ───────────────────────────────────────── */
.skill-badge {
    display: inline-block;
    padding: 7px 16px;
    border-radius: 100px;
    background: var(--primary-50);
    color: var(--primary);
    font-weight: 500;
    font-size: 0.85rem;
    margin: 4px;
    border: 1px solid var(--primary-100);
    transition: transform .2s var(--ease-bounce), box-shadow .2s var(--ease);
}
.skill-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(37,99,235,.18);
}

.skill-badge:nth-child(3n+1) { background: rgba(37,99,235,.07);  color: #2563EB; border-color: rgba(37,99,235,.18); }
.skill-badge:nth-child(3n+2) { background: rgba(5,150,105,.07);  color: #059669; border-color: rgba(5,150,105,.18); }
.skill-badge:nth-child(3n)   { background: rgba(124,58,237,.07); color: #7C3AED; border-color: rgba(124,58,237,.18); }

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .profile-pic-container { width: 150px; height: 150px; }
    .glass-effect:hover { transform: none; box-shadow: var(--shadow-sm); }
    .project-card:hover { transform: none; box-shadow: var(--shadow-sm); }
    .project-card:hover img { transform: none; }
    .cursor-dot, .cursor-dot-outline, .cursor-trail { display: none; }
    h1 { font-size: 2.5rem !important; }
    h2 { font-size: 2rem !important; }
}

@media (max-width: 480px) {
    .profile-pic-container { width: 130px; height: 130px; }
    .glass-effect h3 { font-size: 1rem; }
    .glass-effect p  { font-size: 0.9rem; }
}

/* ─── Dark mode surface overrides ─────────────────────────── */
.dark body { background: var(--dark); color: #F1F5F9; }
.dark .glass-effect { background: var(--dark-2); border-color: var(--border-dark); }

/* ─── Dot background pattern ─────────────────────────────── */
.dot-pattern {
    background-image: radial-gradient(circle, rgba(37,99,235,.07) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* ─── Stat counter cards ──────────────────────────────────── */
.stat-card {
    text-align: center;
    padding: 24px 16px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform .25s var(--ease-bounce), box-shadow .25s var(--ease);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}
.stat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.stat-number {
    font-family: 'Syne', sans-serif;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    display: block;
}
.stat-label {
    font-size: .8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--text-2);
    margin-top: 6px;
    display: block;
}
.stat-icon { font-size: 1.5rem; margin-bottom: 10px; display: block; }

/* ─── Skill chip cloud ────────────────────────────────────── */
.skill-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: 100px;
    font-size: .82rem;
    font-weight: 600;
    border: 1.5px solid;
    transition: transform .2s var(--ease-bounce), box-shadow .2s var(--ease);
    cursor: default;
    white-space: nowrap;
}
.skill-chip:hover { transform: translateY(-3px) scale(1.04); }
.skill-chip.blue  { background: rgba(37,99,235,.07);  color: #1D4ED8; border-color: rgba(37,99,235,.2); }
.skill-chip.blue:hover  { box-shadow: 0 4px 16px rgba(37,99,235,.2); }
.skill-chip.green { background: rgba(5,150,105,.07);  color: #047857; border-color: rgba(5,150,105,.2); }
.skill-chip.green:hover { box-shadow: 0 4px 16px rgba(5,150,105,.2); }
.skill-chip.purple{ background: rgba(124,58,237,.07); color: #6D28D9; border-color: rgba(124,58,237,.2); }
.skill-chip.purple:hover{ box-shadow: 0 4px 16px rgba(124,58,237,.2); }

.skill-row-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .09em;
    text-transform: uppercase;
    padding: 3px 12px;
    border-radius: 100px;
    margin-bottom: 10px;
}
.skill-row-label.blue   { background: rgba(37,99,235,.1);  color: #1D4ED8; }
.skill-row-label.green  { background: rgba(5,150,105,.1);  color: #047857; }
.skill-row-label.purple { background: rgba(124,58,237,.1); color: #6D28D9; }

.saas-context-box {
    background: linear-gradient(135deg, rgba(37,99,235,.06) 0%, rgba(5,150,105,.05) 100%);
    border: 1px solid rgba(37,99,235,.15);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 32px;
    display: flex;
    align-items: flex-start;
    gap: 14px;
}
.saas-context-box .saas-icon { font-size: 1.4rem; color: var(--primary); flex-shrink: 0; margin-top: 2px; }

/* ─── Contact split layout ────────────────────────────────── */
.contact-split {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
@media (max-width: 768px) { .contact-split { grid-template-columns: 1fr; } }

.contact-info-panel {
    background: linear-gradient(150deg, var(--primary-50) 0%, #fff 100%);
    border-right: 1px solid var(--border);
    padding: 40px 32px;
}
@media (max-width: 768px) {
    .contact-info-panel { border-right: none; border-bottom: 1px solid var(--border); padding: 28px 20px; }
}

.contact-form-panel { padding: 40px 36px; }
@media (max-width: 768px) { .contact-form-panel { padding: 28px 20px; } }

.contact-info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: .9rem;
    color: var(--text-2);
}
.contact-info-item:last-of-type { border-bottom: none; }
.contact-info-item .ci-icon {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-xs);
    color: var(--primary);
    flex-shrink: 0;
    font-size: .95rem;
}

.availability-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    background: rgba(5,150,105,.1);
    color: #047857;
    border: 1px solid rgba(5,150,105,.2);
    border-radius: 100px;
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .06em;
}
.availability-badge .pulse-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: #10B981;
    animation: avail-pulse 1.8s ease-in-out infinite;
}
@keyframes avail-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: .5; transform: scale(.7); }
}