/* =========================
   GOOGLE FONT
========================= */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Poppins',sans-serif;
}

html{
    scroll-behavior:smooth;
}
/* ==========================
   THEME VARIABLES (PER PAGE)
========================== */

:root{
    --bg:#f5f7fb;
    --card:#ffffff;
    --text:#1f2937;
    --primary:#4f46e5;
    --shadow:0 10px 30px rgba(31,41,55,.08);
}

body.dark{
    --bg:#0f172a;
    --card:#1e293b;
    --text:#f8fafc;
    --primary:#818cf8;
    --shadow:0 10px 30px rgba(0,0,0,.45);
}

body{
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background:var(--bg);
    color:var(--text);
    transition:background .4s ease, color .4s ease;
}
main{
    flex:1;
}

/* smooth color-morph on every themed element too */
header, .stat-card, .feature-card, .startup-card, .search-box input{
    transition:background .4s ease, color .4s ease, box-shadow .4s ease, border-color .4s ease, transform .3s ease;
}

/* =========================
   NAVBAR
========================= */

header{
    width:100%;
    background:var(--card);
    position:fixed;
    top:0;
    left:0;
    z-index:1000;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}

.navbar{
    max-width:1200px;
    margin:auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 20px;
}

.logo{
    font-size:28px;
    font-weight:700;
    color:#4f46e5;
    background:linear-gradient(135deg,#4f46e5,#7c3aed,#4f46e5);
    background-size:200% auto;
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
    animation:shine 6s linear infinite;
}

@keyframes shine{
    to{ background-position:200% center; }
}

.nav-links{
    display:flex;
    list-style:none;
    align-items:center;
    gap:25px;
}

.nav-links li{
    position:relative;
}

.nav-links a{
    text-decoration:none;
    color:var(--text);
    font-weight:500;
    transition:.3s;
    position:relative;
    padding-bottom:4px;
}

.nav-links a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-2px;
    width:0%;
    height:2px;
    background:#4f46e5;
    transition:width .3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after{
    width:100%;
}

.nav-links a:hover{
    color:#4f46e5;
}

.nav-buttons{
    display:flex;
    gap:10px;
}

.btn{
    padding:12px 22px;
    border-radius:8px;
    text-decoration:none;
    transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
    display:inline-block;
    position:relative;
    overflow:hidden;
}

.btn:hover{
    transform:translateY(-3px);
    box-shadow:0 10px 20px rgba(79,70,229,.25);
}

.btn:active{
    transform:translateY(0);
}

.login-btn{
    border:2px solid #4f46e5;
    color:#4f46e5;
}

.register-btn{
    background:#4f46e5;
    color:#fff;
}

.register-btn:hover{
    background:#4338ca;
}

.menu-btn{
    display:none;
    font-size:26px;
    cursor:pointer;
}

.theme-btn{
    width:48px;
    height:48px;
    border:none;
    border-radius:50%;
    background:linear-gradient(135deg,#4f46e5,#7c3aed);
    color:#fff;
    font-size:20px;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:all .35s ease;
    box-shadow:0 8px 20px rgba(79,70,229,.35);
}

.theme-btn:hover{
    transform:rotate(180deg) scale(1.1);
    box-shadow:0 12px 28px rgba(79,70,229,.5);
}

.theme-btn:active{
    transform:scale(.9);
}

.theme-btn.spin{
    animation:spinOnce .5s ease;
}

@keyframes spinOnce{
    from{ transform:rotate(0deg) scale(1); }
    to{ transform:rotate(360deg) scale(1); }
}

/* Ripple effect (JS adds the span) */
.ripple{
    position:absolute;
    border-radius:50%;
    background:rgba(255,255,255,.6);
    transform:scale(0);
    animation:rippleAnim .6s ease-out;
    pointer-events:none;
}

@keyframes rippleAnim{
    to{
        transform:scale(4);
        opacity:0;
    }
}

/* =========================
   HERO
========================= */

.hero{
    max-width:1200px;
    margin:120px auto 0;
    display:grid;
    grid-template-columns:1fr 1fr;
    align-items:center;
    gap:60px;
    padding:20px;
    position:relative;
}

.hero h1{
    font-size:58px;
    line-height:1.2;
    margin-bottom:20px;
    opacity:0;
    transform:translateY(25px);
    animation:heroIn .8s ease forwards;
}

.hero h1 span{
    color:#4f46e5;
    display:inline-block;
    min-width:1px;
}

.hero p{
    color:var(--text);
    opacity:0;
    font-size:18px;
    line-height:1.7;
    transform:translateY(25px);
    animation:heroIn .8s ease .15s forwards;
}

.hero-buttons{
    margin:35px 0;
    opacity:0;
    transform:translateY(25px);
    animation:heroIn .8s ease .3s forwards;
}

@keyframes heroIn{
    to{
        opacity:1;
        transform:translateY(0);
    }
}

.primary{
    background:#4f46e5;
    color:#fff;
}

.secondary{
    border:2px solid #4f46e5;
    color:#4f46e5;
    margin-left:15px;
}

.primary:hover{
    background:#4338ca;
}

.search-box{
    display:flex;
    margin-top:30px;
    opacity:0;
    transform:translateY(25px);
    animation:heroIn .8s ease .45s forwards;
}

.search-box input{
    flex:1;
    padding:15px;
    border:2px solid transparent;
    border-radius:8px 0 0 8px;
    font-size:16px;
    outline:none;
    box-shadow:0 0 8px rgba(0,0,0,.08);
    background:var(--card);
    color:var(--text);
}

.search-box input:focus{
    border-color:#4f46e5;
    box-shadow:0 0 0 4px rgba(79,70,229,.15);
}

.search-box input.shake{
    animation:shake .4s ease;
    border-color:#ef4444;
}

@keyframes shake{
    0%,100%{ transform:translateX(0); }
    20%{ transform:translateX(-8px); }
    40%{ transform:translateX(8px); }
    60%{ transform:translateX(-6px); }
    80%{ transform:translateX(6px); }
}

.search-box button{
    width:70px;
    border:none;
    background:#4f46e5;
    color:#fff;
    font-size:20px;
    border-radius:0 8px 8px 0;
    cursor:pointer;
    transition:background .25s ease;
}

.search-box button:hover{
    background:#4338ca;
}

.hero-image{
    opacity:0;
    perspective:800px;
    animation:heroIn 1s ease .2s forwards, floaty 5s ease-in-out 1s infinite;
    will-change:transform;
}

.hero-image img{
    width:100%;
    transition:transform .15s ease-out;
    transform-style:preserve-3d;
}

@keyframes floaty{
    0%,100%{ transform:translateY(0px); }
    50%{ transform:translateY(-14px); }
}

/* =========================
   STATS
========================= */

.stats{
    max-width:1200px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    padding:20px;
}

.stat-card{
    background:var(--card);
    text-align:center;
    padding:35px;
    border-radius:15px;
    box-shadow:var(--shadow);
    transform:translateY(40px);
    opacity:0;
}

.stat-card:hover{
    transform:translateY(-8px) !important;
    box-shadow:0 16px 34px rgba(79,70,229,.18);
}

.stat-card h2{
    color:#4f46e5;
    font-size:40px;
}

/* =========================
   FEATURES
========================= */

.features{
    max-width:1200px;
    margin:100px auto;
    padding:20px;
}

.features h2{
    text-align:center;
    margin-bottom:50px;
    font-size:38px;
}

.feature-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:30px;
}

.feature-card{
    background:var(--card);
    border-radius:15px;
    padding:35px;
    text-align:center;
    transition:transform .4s ease, box-shadow .4s ease;
    box-shadow:var(--shadow);
    transform:translateY(40px);
    opacity:0;
}

.feature-card:hover{
    transform:translateY(-10px) !important;
    box-shadow:0 20px 40px rgba(79,70,229,.2);
}

.feature-card i{
    font-size:50px;
    color:#4f46e5;
    margin-bottom:20px;
    display:inline-block;
    transition:transform .4s ease;
}

.feature-card:hover i{
    transform:scale(1.15) rotate(-6deg);
}

.feature-card h3{
    margin-bottom:15px;
}

/* =========================
   STARTUP CARDS
========================= */

.startup-section{
    max-width:1200px;
    margin:auto;
    padding:20px;
}

.startup-section h2{
    text-align:center;
    margin-bottom:40px;
}

.startup-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
    gap:30px;
}

.startup-card{
    background:var(--card);
    padding:30px;
    border-radius:15px;
    box-shadow:var(--shadow);
    transform:translateY(40px);
    opacity:0;
    transition:transform .4s ease, box-shadow .4s ease;
}

.startup-card:hover{
    transform:translateY(-8px) !important;
    box-shadow:0 20px 40px rgba(79,70,229,.18);
}

.startup-card h3{
    margin-bottom:15px;
}

.startup-card button{
    margin-top:20px;
    background:#4f46e5;
    color:#fff;
    border:none;
    padding:12px 25px;
    border-radius:8px;
    cursor:pointer;
    position:relative;
    overflow:hidden;
    transition:background .25s ease, transform .25s ease;
}

.startup-card button:hover{
    background:#4338ca;
    transform:translateY(-2px);
}

/* =========================
   CTA
========================= */

.cta{
    margin:100px 0;
    text-align:center;
    background:#4f46e5;
    color:#fff;
    padding:70px 20px;
}

.cta h2{
    font-size:42px;
    margin-bottom:15px;
}

.cta .primary{
    background:#fff;
    color:#4f46e5;
    margin-top:25px;
}

/* =========================
   FOOTER
========================= */

footer{
    background:#111827;
    color:#fff;
    padding:50px 20px;
    text-align:center;
    margin-top:auto;
}

.footer-content{
    max-width:1200px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:30px;
}

.footer-content a{
    color:#ddd;
    text-decoration:none;
    transition:color .25s ease, padding-left .25s ease;
}

.footer-content a:hover{
    color:#818cf8;
    padding-left:4px;
}

.footer-content i{
    font-size:24px;
    margin-right:15px;
    margin-top:15px;
    cursor:pointer;
    display:inline-block;
    transition:transform .3s ease, color .3s ease;
}

.footer-content i:hover{
    transform:translateY(-4px) scale(1.15);
    color:#818cf8;
}

footer hr{
    margin:30px 0;
    border-color:#444;
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {

    .hero {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
        margin-top: 100px;
    }

    .hero-content {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .hero-image img {
        width: 85%;
        max-width: 450px;
        margin: auto;
        display: block;
    }

    .hero-buttons {
        display: flex;
        justify-content: center;
        gap: 15px;
        flex-wrap: wrap;
    }

    .secondary {
        margin-left: 0;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .nav-links {
        display: none;
    }

    .nav-buttons {
        display: none;
    }

    .menu-btn {
        display: block;
    }
}

/* Mobile Phones */
@media (max-width: 768px) {

    .hero {
        padding: 20px 15px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        text-align: center;
    }

    .search-box {
        flex-direction: column;
        gap: 10px;
    }

    .search-box input {
        width: 100%;
        border-radius: 8px;
    }

    .search-box button {
        width: 100%;
        height: 50px;
        border-radius: 8px;
    }

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

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

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .cta h2 {
        font-size: 30px;
    }

    .features h2,
    .startup-section h2 {
        font-size: 30px;
    }
}

/* Small Phones */
@media (max-width: 480px) {

    .navbar {
        padding: 15px;
    }

    .logo {
        font-size: 22px;
    }

    .hero {
        margin-top: 90px;
    }

    .hero h1 {
        font-size: 30px;
        line-height: 1.3;
    }

    .hero p {
        font-size: 15px;
    }

    .hero-image img {
        width: 100%;
    }

    .stat-card,
    .feature-card,
    .startup-card {
        padding: 20px;
    }

    .stat-card h2 {
        font-size: 32px;
    }

    .cta {
        padding: 50px 20px;
    }

    .cta h2 {
        font-size: 26px;
    }

    .footer-content {
        gap: 20px;
    }
}

body.dark .search-box input{
    background:#334155;
    color:#fff;
}

body.dark .search-box input::placeholder{
    color:#cbd5e1;
}

body.dark .feature-card,
body.dark .startup-card,
body.dark .stat-card{
    border:1px solid #334155;
}

body.dark .nav-links a:hover{
    color:#818cf8;
}

@media (prefers-reduced-motion:reduce){
    *{
        animation-duration:0.001ms !important;
        animation-iteration-count:1 !important;
        transition-duration:0.001ms !important;
    }
}