:root{
    --white: #FFFFFF;
    --grey-dark: #4A5A72;
    --grey-mid: #8390A3;
    --grey-light: #FBF3E7;
    --grey-border: #ECE0CB;
    --blue: #6FA3D8;
    --blue-soft: #DCEBF8;
    --blue-dark: #3F6E9E;
    --danger: #E39C9C;
    --success: #9BCDB0;
    --font-display: 'Sora', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius: 14px;
}

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html{
    scroll-behavior: smooth;
}

body{
    font-family: var(--font-body);
    background: var(--white);
    color: var(--grey-dark);
    line-height: 1.55;
}

a{
    color: inherit;
    text-decoration: none;
}

.site-header{
    position: sticky;
    top: 0;
    z-index: 60;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--grey-border);
}

.header-inner{
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
}

.logo{
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--grey-dark);
}

.logo span{
    color: var(--blue);
}

.main-nav{
    display: flex;
    gap: 28px;
}

.main-nav a{
    font-size: .92rem;
    font-weight: 500;
    color: var(--grey-mid);
    transition: color .2s ease;
}

.main-nav a:hover{
    color: var(--blue);
}

.nav-toggle{
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 38px;
    height: 38px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span{
    width: 100%;
    height: 2.5px;
    background: var(--grey-dark);
    border-radius: 2px;
    transition: all .3s ease;
}

.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity: 0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.hero{
    position: relative;
    padding: 110px 28px 90px;
    text-align: center;
    overflow: hidden;
    background: var(--grey-light);
}

.hero-grid{
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--grey-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--grey-border) 1px, transparent 1px);
    background-size: 42px 42px;
    -webkit-mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,.55) 0%, transparent 65%);
    mask-image: radial-gradient(circle at 50% 30%, rgba(0,0,0,.55) 0%, transparent 65%);
    opacity: .7;
}

.hero-content{
    position: relative;
    z-index: 2;
    max-width: 720px;
    margin: 0 auto;
}

.eyebrow{
    font-size: .85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 16px;
}

.hero h1{
    font-family: var(--font-display);
    font-weight: 800;
    font-size: clamp(2.2rem, 5.5vw, 3.6rem);
    line-height: 1.1;
    color: var(--grey-dark);
}

.hero-sub{
    margin-top: 18px;
    font-size: 1.15rem;
    color: var(--grey-mid);
}

.btn-primary{
    display: inline-block;
    margin-top: 32px;
    background: var(--blue);
    color: var(--white);
    font-weight: 600;
    font-size: .95rem;
    padding: 14px 32px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: all .25s ease;
}

.btn-primary:hover{
    background: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 14px 26px rgba(47,111,237,.28);
}

.categories-strip{
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    padding: 26px 28px;
    border-bottom: 1px solid var(--grey-border);
}

.chip{
    font-size: .85rem;
    font-weight: 500;
    padding: 8px 18px;
    border-radius: 999px;
    border: 1.5px solid var(--grey-border);
    color: var(--grey-mid);
    cursor: pointer;
    transition: all .2s ease;
    user-select: none;
}

.chip:hover{
    border-color: var(--blue);
    color: var(--blue);
}

.chip.active{
    background: var(--blue);
    border-color: var(--blue);
    color: var(--white);
}

.composer{
    max-width: 900px;
    margin: 70px auto;
    padding: 0 28px;
}

.composer-heading{
    margin-bottom: 30px;
}

.composer-heading h2{
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 700;
}

.post-form{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px 24px;
    background: var(--white);
    border: 1px solid var(--grey-border);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: 0 20px 45px rgba(15,23,42,.05);
}

.field-group{
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.field-group.span-2{
    grid-column: 1 / 3;
}

label{
    font-size: .85rem;
    font-weight: 600;
    color: var(--grey-dark);
}

input[type="text"],
input[type="file"],
select,
textarea{
    border: 1.5px solid var(--grey-border);
    border-radius: 10px;
    padding: 12px 14px;
    font-family: var(--font-body);
    font-size: .95rem;
    color: var(--grey-dark);
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
    background: var(--white);
    width: 100%;
}

textarea{
    min-height: 160px;
    resize: vertical;
}

input::placeholder,
textarea::placeholder{
    color: #B0A99C;
}

input:focus,
select:focus,
textarea:focus{
    border-color: var(--blue);
    box-shadow: 0 0 0 3px var(--blue-soft);
}

input.valid,
select.valid,
textarea.valid{
    border-color: var(--success);
}

input.invalid,
select.invalid,
textarea.invalid{
    border-color: var(--danger);
}

.field-error{
    font-size: .78rem;
    color: var(--danger);
    min-height: 14px;
}

.field-hint{
    font-size: .78rem;
    color: var(--grey-mid);
}

.form-actions{
    display: flex;
    gap: 14px;
    margin-top: 6px;
}

.btn-secondary{
    background: var(--white);
    border: 1.5px solid var(--grey-border);
    color: var(--grey-dark);
    font-weight: 600;
    font-size: .9rem;
    padding: 13px 26px;
    border-radius: 999px;
    cursor: pointer;
    transition: all .2s ease;
}

.btn-secondary:hover{
    border-color: var(--grey-dark);
}

.btn-danger{
    background: var(--danger);
    color: var(--white);
    border: none;
    font-weight: 600;
    font-size: .9rem;
    padding: 13px 26px;
    border-radius: 999px;
    cursor: pointer;
    transition: all .2s ease;
}

.btn-danger:hover{
    background: #C97575;
}

.posts-section{
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 28px 100px;
}

.posts-heading{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    margin-bottom: 34px;
}

.posts-heading h2{
    font-family: var(--font-display);
    font-size: 1.7rem;
    font-weight: 700;
}

.posts-controls{
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.search-input{
    border: 1.5px solid var(--grey-border);
    border-radius: 999px;
    padding: 11px 18px;
    font-size: .9rem;
    min-width: 240px;
    outline: none;
    transition: border-color .2s ease;
}

.search-input:focus{
    border-color: var(--blue);
}

.control-select{
    border: 1.5px solid var(--grey-border);
    border-radius: 999px;
    padding: 11px 16px;
    font-size: .9rem;
    background: var(--white);
    cursor: pointer;
    outline: none;
}

.posts-grid{
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 26px;
}

.post-card{
    border: 1px solid var(--grey-border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: var(--white);
    transition: all .3s ease;
}

.post-card:hover{
    box-shadow: 0 20px 40px rgba(15,23,42,.08);
    transform: translateY(-4px);
}

.post-card-img{
    width: 100%;
    height: 190px;
    object-fit: cover;
    background: var(--grey-light);
}

.post-card-img.placeholder{
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--grey-mid);
    font-size: .85rem;
}

.post-card-body{
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.post-card-meta{
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: .78rem;
    color: var(--grey-mid);
}

.post-card-category{
    background: var(--blue-soft);
    color: var(--blue-dark);
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    text-transform: capitalize;
}

.post-card-title{
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--grey-dark);
}

.post-card-desc{
    font-size: .92rem;
    color: var(--grey-mid);
}

.post-card-tags{
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.post-tag{
    font-size: .74rem;
    color: var(--blue-dark);
    background: var(--blue-soft);
    padding: 3px 9px;
    border-radius: 6px;
}

.post-card-full{
    font-size: .92rem;
    color: var(--grey-dark);
    line-height: 1.6;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all .4s ease;
}

.post-card-full.expanded{
    max-height: 1000px;
    opacity: 1;
    margin-top: 6px;
    padding-top: 12px;
    border-top: 1px solid var(--grey-border);
}

.post-card-actions{
    margin-top: auto;
    display: flex;
    gap: 10px;
    padding-top: 12px;
}

.card-btn{
    flex: 1;
    font-size: .82rem;
    font-weight: 600;
    padding: 9px 0;
    border-radius: 999px;
    border: 1.5px solid var(--grey-border);
    background: var(--white);
    cursor: pointer;
    transition: all .2s ease;
}

.card-btn.read-more{
    border-color: var(--blue);
    color: var(--blue);
}

.card-btn.read-more:hover{
    background: var(--blue);
    color: var(--white);
}

.card-btn.edit-btn:hover{
    border-color: var(--grey-dark);
}

.card-btn.delete-btn{
    color: var(--danger);
    border-color: var(--danger);
}

.card-btn.delete-btn:hover{
    background: var(--danger);
    color: var(--white);
}

.empty-state{
    text-align: center;
    color: var(--grey-mid);
    padding: 60px 20px;
    font-size: .95rem;
}

.about-section{
    max-width: 760px;
    margin: 0 auto;
    padding: 60px 28px 90px;
    text-align: center;
}

.about-section h2{
    font-family: var(--font-display);
    font-size: 1.7rem;
    margin-bottom: 16px;
}

.about-section p{
    color: var(--grey-mid);
    font-size: 1rem;
}

.site-footer{
    background: var(--grey-dark);
    color: rgba(255,255,255,.85);
    padding: 50px 28px 32px;
}

.footer-inner{
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}

.footer-inner .logo{
    color: var(--white);
    margin-bottom: 14px;
}

.footer-inner p{
    color: rgba(255,255,255,.65);
    font-size: .92rem;
    margin-top: 6px;
}

.copyright{
    margin-top: 20px;
    font-size: .8rem;
    color: rgba(255,255,255,.4);
}

.toast{
    position: fixed;
    bottom: 28px;
    right: 28px;
    background: var(--grey-dark);
    color: var(--white);
    padding: 15px 24px;
    border-radius: 10px;
    font-size: .92rem;
    font-weight: 500;
    box-shadow: 0 16px 32px rgba(0,0,0,.2);
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: all .4s cubic-bezier(.2,.8,.2,1);
    z-index: 200;
}

.toast.success{
    background: var(--success);
}

.toast.danger{
    background: var(--danger);
}

.toast.visible{
    transform: translateY(0);
    opacity: 1;
}

.modal-overlay{
    position: fixed;
    inset: 0;
    background: rgba(74,90,114,.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease;
    z-index: 300;
}

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

.modal-box{
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 380px;
    width: 90%;
    box-shadow: 0 30px 60px rgba(0,0,0,.25);
    transform: translateY(10px);
    transition: transform .25s ease;
}

.modal-overlay.visible .modal-box{
    transform: translateY(0);
}

.modal-box h3{
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.modal-box p{
    color: var(--grey-mid);
    font-size: .92rem;
    margin-bottom: 22px;
}

.modal-actions{
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

@media (max-width: 860px){
    .nav-toggle{
        display: flex;
    }

    .main-nav{
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        border-bottom: 1px solid var(--grey-border);
        flex-direction: column;
        padding: 10px 28px 20px;
        gap: 16px;
        display: none;
    }

    .main-nav.nav-open{
        display: flex;
    }

    .post-form{
        grid-template-columns: 1fr;
        padding: 26px;
    }

    .field-group.span-2{
        grid-column: 1;
    }
}

@media (max-width: 600px){
    .header-inner{
        padding: 14px 18px;
    }

    .hero{
        padding: 80px 20px 60px;
    }

    .composer{
        margin: 46px auto;
        padding: 0 18px;
    }

    .posts-section{
        padding: 30px 18px 80px;
    }

    .posts-heading{
        flex-direction: column;
        align-items: flex-start;
    }

    .posts-controls{
        width: 100%;
    }

    .search-input,
    .control-select{
        flex: 1 1 auto;
        min-width: 0;
    }

    .toast{
        left: 16px;
        right: 16px;
        bottom: 16px;
    }
}