/* =========================================================
   HOLLOW BLOCK
   MAIN STYLE / THEME
========================================================= */


/* =========================================================
   ROOT VARIABLES
========================================================= */

:root {

    /* Colors */
    --color-primary: #2f6b45;
    --color-primary-dark: #245237;
    --color-primary-light: #eaf3ed;

    --color-accent: #c68a32;
    --color-accent-dark: #a96f22;

    --color-dark: #1d2721;
    --color-dark-soft: #344039;

    --color-text: #3f4842;
    --color-text-light: #6d766f;

    --color-white: #ffffff;
    --color-off-white: #f7f8f6;
    --color-light: #eef1ed;

    --color-border: #dfe4df;

    /* Background */
    --bg-body: #ffffff;
    --bg-soft: #f6f8f5;
    --bg-dark: #1d2721;

    /* Typography */
    --font-bangla: "Noto Sans Bengali", sans-serif;
    --font-display: "Hind Siliguri", sans-serif;

    /* Font sizes */
    --fs-xs: 0.78rem;
    --fs-sm: 0.9rem;
    --fs-base: 1rem;
    --fs-md: 1.1rem;
    --fs-lg: 1.3rem;
    --fs-xl: 1.8rem;
    --fs-2xl: 2.4rem;
    --fs-3xl: 3.2rem;
    --fs-4xl: 4.2rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 26px;

    /* Shadows */
    --shadow-sm:
        0 4px 16px rgba(25, 35, 28, 0.06);

    --shadow-md:
        0 12px 35px rgba(25, 35, 28, 0.10);

    --shadow-lg:
        0 24px 60px rgba(25, 35, 28, 0.14);

    /* Container */
    --container-width: 1180px;

    /* Section spacing */
    --section-padding: 100px;

    /* Transition */
    --transition: 0.3s ease;

}


/* =========================================================
   BASE
========================================================= */

html {
    scroll-behavior: smooth;
}

body {

    font-family: var(--font-bangla);
    color: var(--color-text);
    background: var(--bg-body);

    font-size: var(--fs-base);
    line-height: 1.8;

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img {
    display: block;
    max-width: 100%;
}

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

button,
input,
textarea,
select {
    font-family: inherit;
}


/* =========================================================
   CONTAINER
========================================================= */

.container {

    width: min(
        calc(100% - 40px),
        var(--container-width)
    );

    margin-inline: auto;
}


/* =========================================================
   SECTION
========================================================= */

.section {
    padding: var(--section-padding) 0;
}


/* =========================================================
   SECTION HEADING
========================================================= */

.section-heading {
    max-width: 720px;
    margin-bottom: 55px;
}

.section-heading.center {
    margin-inline: auto;
    text-align: center;
}

.section-label {

    display: inline-flex;
    align-items: center;

    margin-bottom: 12px;

    color: var(--color-primary);

    font-size: var(--fs-sm);
    font-weight: 700;

    letter-spacing: 0.02em;
}

.section-label::before {

    content: "";

    width: 24px;
    height: 2px;

    margin-right: 9px;

    background: var(--color-accent);
}

.section-heading h2 {

    margin: 0 0 18px;

    color: var(--color-dark);

    font-family: var(--font-display);
    font-size: var(--fs-2xl);
    font-weight: 700;

    line-height: 1.35;
}

.section-heading p {

    margin: 0;

    color: var(--color-text-light);

    font-size: var(--fs-md);
    line-height: 1.9;
}


/* =========================================================
   BUTTONS
========================================================= */

.btn {

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;

    min-height: 52px;
    padding: 12px 24px;

    border: 1px solid transparent;
    border-radius: var(--radius-sm);

    font-size: var(--fs-base);
    font-weight: 700;

    line-height: 1.3;

    cursor: pointer;

    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.btn i {
    font-size: 1.05em;
}

.btn-primary {

    color: var(--color-white);
    background: var(--color-primary);

    box-shadow:
        0 8px 22px rgba(47, 107, 69, 0.20);
}

.btn-primary:hover {

    background: var(--color-primary-dark);

    transform: translateY(-2px);

    box-shadow:
        0 12px 28px rgba(47, 107, 69, 0.28);
}

.btn-outline {

    color: var(--color-white);

    border-color:
        rgba(255, 255, 255, 0.65);

    background:
        rgba(255, 255, 255, 0.08);

    backdrop-filter: blur(5px);
}

.btn-outline:hover {

    color: var(--color-dark);
    background: var(--color-white);

    border-color: var(--color-white);
}

.btn-light {

    color: var(--color-dark);
    background: var(--color-white);
}

.btn-light:hover {

    background: var(--color-light);

    transform: translateY(-2px);
}


/* =========================================================
   TEXT LINK
========================================================= */

.text-link {

    display: inline-flex;
    align-items: center;
    gap: 8px;

    color: var(--color-primary);

    font-weight: 700;

    transition: gap var(--transition);
}

.text-link:hover {
    gap: 12px;
}


/* =========================================================
   FORM BASE
========================================================= */

.form-group {
    margin-bottom: 18px;
}

.form-group label {

    display: block;

    margin-bottom: 7px;

    color: var(--color-dark);

    font-size: var(--fs-sm);
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {

    width: 100%;

    min-height: 50px;
    padding: 10px 14px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);

    outline: none;

    color: var(--color-dark);
    background: var(--color-white);

    font-size: var(--fs-sm);

    transition:
        border-color var(--transition),
        box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {

    border-color: var(--color-primary);

    box-shadow:
        0 0 0 3px rgba(47, 107, 69, 0.08);
}