/* =========================================================
   Supplier Registration - The Ramco Cements Limited
   Design System (matches ramcocements.in brand)
   ========================================================= */

:root {
    /* Brand colors */
    --ramco-navy: #12233d;
    --ramco-navy-dark: #0b1629;
    --ramco-navy-light: #1c3a63;
    --ramco-blue: #2b6cb0;
    --ramco-red: #d4002b;
    --ramco-red-dark: #a50020;
    --ramco-teal: #2a9d8f;

    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Semantic */
    --success: #16a34a;
    --success-bg: #f0fdf4;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --info: var(--ramco-blue);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.35rem;
    --fs-2xl: 1.75rem;
    --fs-3xl: 2.25rem;

    /* Spacing */
    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-5: 1.5rem;
    --sp-6: 2rem;
    --sp-8: 3rem;
    --sp-10: 4rem;

    /* Radii */
    --r-sm: 0.375rem;
    --r-md: 0.5rem;
    --r-lg: 0.875rem;
    --r-xl: 1.25rem;
    --r-pill: 999px;

    /* Shadows */
    --sh-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --sh-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --sh-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --sh-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.15), 0 8px 10px -6px rgba(15, 23, 42, 0.1);

    /* Transitions */
    --t-fast: 150ms ease;
    --t-base: 250ms ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--ramco-blue); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--ramco-navy-light); }

h1, h2, h3, h4 { color: var(--gray-900); line-height: 1.2; }
.serif { font-family: var(--font-serif); }

::selection { background: var(--ramco-red); color: #fff; }

:focus-visible { outline: 3px solid rgba(43, 108, 176, 0.45); outline-offset: 2px; border-radius: var(--r-sm); }

/* ---------- Top bar / Navbar ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: linear-gradient(90deg, var(--ramco-navy) 0%, var(--ramco-navy-light) 55%, var(--ramco-blue) 100%);
    box-shadow: var(--sh-lg);
}
.site-header .container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 var(--sp-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: var(--sp-4);
}
.brand { display: flex; align-items: center; gap: var(--sp-3); font-weight: 700; color: #fff; }
.brand img { height: 34px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-size: 1rem; letter-spacing: 0.3px; }
.brand-text span { font-size: var(--fs-xs); font-weight: 400; color: rgba(255,255,255,0.75); letter-spacing: 1.5px; text-transform: uppercase; }
.site-header nav ul { list-style: none; display: flex; gap: var(--sp-4); align-items: center; margin: 0; padding: 0; }
.site-header nav a {
    color: rgba(255,255,255,0.88);
    font-size: var(--fs-sm);
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    border-radius: var(--r-md);
    transition: background var(--t-fast), color var(--t-fast);
}
.site-header nav a:hover { color: #fff; background: rgba(255,255,255,0.14); }
.header-badge {
    background: var(--ramco-red);
    color: #fff;
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 0.35rem 0.9rem;
    border-radius: var(--r-pill);
}

/* ---------- Hero ---------- */
.hero {
    background:
        radial-gradient(1200px 500px at 85% -10%, rgba(43,108,176,0.25), transparent 60%),
        radial-gradient(900px 400px at -5% 110%, rgba(212,0,43,0.18), transparent 55%),
        linear-gradient(135deg, var(--ramco-navy) 0%, var(--ramco-navy-light) 100%);
    color: #fff;
    padding: var(--sp-10) 0;
    position: relative;
    overflow: hidden;
}
.hero .container { max-width: 1160px; margin: 0 auto; padding: 0 var(--sp-5); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: var(--sp-8); align-items: center; }
.hero-eyebrow {
    text-transform: uppercase; letter-spacing: 2.5px; font-size: var(--fs-xs);
    color: #ffd7dd; font-weight: 600; margin: 0 0 var(--sp-3);
    display: inline-flex; align-items: center; gap: var(--sp-2);
}
.hero-eyebrow::before { content: ''; width: 26px; height: 2px; background: var(--ramco-red); display: inline-block; }
.hero h1 { font-family: var(--font-serif); color: #fff; font-size: var(--fs-3xl); margin: 0 0 var(--sp-4); font-weight: 700; line-height: 1.15; }
.hero p.lead { color: rgba(255,255,255,0.82); font-size: var(--fs-lg); margin: 0 0 var(--sp-5); max-width: 520px; }

/* Trust chips */
.trust-chips { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-4); }
.chip {
    display: inline-flex; align-items: center; gap: 0.45rem;
    background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.18);
    backdrop-filter: blur(4px);
    color: #fff; font-size: var(--fs-xs); font-weight: 500;
    padding: 0.4rem 0.9rem; border-radius: var(--r-pill);
}
.chip svg { width: 14px; height: 14px; }

/* ---------- Cards ---------- */
.card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--r-xl);
    box-shadow: var(--sh-md);
    padding: var(--sp-6);
}
.card-accent { border-top: 4px solid var(--ramco-red); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
    font-family: inherit; font-size: var(--fs-base); font-weight: 600;
    border-radius: var(--r-md); border: 1px solid transparent; cursor: pointer;
    padding: 0.7rem 1.4rem; transition: transform var(--t-fast), box-shadow var(--t-fast), background var(--t-fast), color var(--t-fast);
    line-height: 1.2; text-align: center; user-select: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary, .btn-red { background: var(--ramco-red); color: #fff; box-shadow: var(--sh-md); }
.btn-primary:hover, .btn-red:hover { background: var(--ramco-red-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--sh-lg); }
.btn-navy { background: var(--ramco-navy); color: #fff; }
.btn-navy:hover { background: var(--ramco-navy-light); color: #fff; }
.btn-blue { background: var(--ramco-blue); color: #fff; }
.btn-blue:hover { background: var(--ramco-navy-light); color: #fff; }
.btn-outline { background: transparent; border-color: var(--gray-300); color: var(--gray-700); }
.btn-outline:hover { background: var(--gray-100); border-color: var(--gray-400); color: var(--gray-900); }
.btn-ghost { background: transparent; color: var(--gray-600); }
.btn-ghost:hover { background: var(--gray-100); color: var(--gray-900); }
.btn-light { background: #fff; color: var(--ramco-navy); }
.btn-light:hover { background: var(--gray-100); color: var(--ramco-navy-dark); }
.btn-lg { padding: 0.9rem 2rem; font-size: var(--fs-lg); border-radius: var(--r-lg); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn .spin { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff; border-radius: 50%; animation: rot 0.7s linear infinite; display: none; }
.btn.is-loading .spin { display: inline-block; }
@keyframes rot { to { transform: rotate(360deg); } }

/* ---------- Forms ---------- */
.field-group { margin-bottom: var(--sp-4); }
.field-label { display: block; font-size: var(--fs-sm); font-weight: 600; color: var(--gray-700); margin-bottom: 0.4rem; }
.field-label .req { color: var(--ramco-red); }
.field-label .hint-lbl { color: var(--gray-400); font-weight: 400; font-size: var(--fs-xs); }

.field-input, .form-control {
    width: 100%; padding: 0.7rem 0.9rem;
    font-family: inherit; font-size: var(--fs-base); color: var(--gray-900);
    background: var(--white); border: 1.5px solid var(--gray-300);
    border-radius: var(--r-md); transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field-input::placeholder { color: var(--gray-400); }
.field-input:hover { border-color: var(--gray-400); }
.field-input:focus { outline: none; border-color: var(--ramco-blue); box-shadow: 0 0 0 3px rgba(43,108,176,0.15); }
.field-input:read-only { background: var(--gray-100); color: var(--gray-500); cursor: default; }
.field-input.is-invalid { border-color: var(--danger); }
.field-input.is-invalid:focus { box-shadow: 0 0 0 3px rgba(220,38,38,0.12); }
.field-input.is-valid { border-color: var(--success); }

select.field-input { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.8rem center; padding-right: 2.5rem; }

textarea.field-input { resize: vertical; min-height: 90px; }

.field-hint { display: block; font-size: var(--fs-xs); color: var(--gray-400); margin-top: 0.3rem; }
.field-error { display: block; font-size: var(--fs-xs); color: var(--danger); font-weight: 500; margin-top: 0.3rem; }
.field-success { display: block; font-size: var(--fs-xs); color: var(--success); font-weight: 500; margin-top: 0.3rem; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 var(--sp-4); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 var(--sp-4); }
@media (max-width: 768px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* Custom checkbox */
.checkbox-wrap { display: flex; align-items: flex-start; gap: 0.75rem; cursor: pointer; }
.checkbox-wrap input[type="checkbox"] { width: 20px; height: 20px; margin-top: 0.15rem; accent-color: var(--ramco-red); cursor: pointer; }
.checkbox-wrap .check-label { font-size: var(--fs-sm); color: var(--gray-600); }

/* Styled file upload */
.file-box { position: relative; display: flex; align-items: center; gap: var(--sp-3); }
.file-box input[type="file"] {
    position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer;
}
.file-pill {
    display: inline-flex; align-items: center; gap: 0.5rem;
    padding: 0.65rem 1.1rem; border: 1.5px dashed var(--gray-300);
    border-radius: var(--r-md); background: var(--gray-50); color: var(--gray-500);
    font-size: var(--fs-sm); font-weight: 500; transition: all var(--t-fast); width: 100%;
}
.file-box:hover .file-pill, .file-box.dragover .file-pill { border-color: var(--ramco-blue); color: var(--ramco-blue); background: var(--gray-100); }
.file-pill svg { width: 18px; height: 18px; flex-shrink: 0; }
.file-name { font-size: var(--fs-xs); color: var(--gray-600); margin-top: 0.3rem; display: flex; align-items: center; gap: 0.35rem; word-break: break-all; }
.file-name.has-file { color: var(--success); }

/* ---------- Section headings ---------- */
.section-title { font-size: var(--fs-xl); font-weight: 700; margin: 0 0 0.25rem; display: flex; align-items: center; gap: 0.6rem; color: var(--ramco-navy); }
.section-sub { color: var(--gray-500); font-size: var(--fs-sm); margin: 0 0 var(--sp-4); }
.section-icon {
    width: 40px; height: 40px; border-radius: var(--r-md); flex-shrink: 0;
    background: linear-gradient(135deg, var(--ramco-navy), var(--ramco-blue)); color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
}
.section-icon svg { width: 20px; height: 20px; }

/* ---------- Tables ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); background: #fff; }
.data-table thead th {
    text-align: left; padding: 0.7rem 0.9rem; background: var(--gray-100);
    color: var(--gray-600); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.6px; font-weight: 600;
    border-bottom: 1px solid var(--gray-200);
}
.data-table tbody td { padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); }
.data-table tbody tr:hover td { background: var(--gray-50); }
.data-table tbody tr:last-child td { border-bottom: none; }
.empty-state { padding: var(--sp-6); text-align: center; color: var(--gray-400); font-size: var(--fs-sm); background: var(--gray-50); border-radius: var(--r-lg); }

/* ---------- Footer ---------- */
.site-footer {
    background: var(--ramco-navy-dark); color: rgba(255,255,255,0.72);
    margin-top: auto; padding: var(--sp-8) 0 var(--sp-5);
}
.site-footer .container { max-width: 1160px; margin: 0 auto; padding: 0 var(--sp-5); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr; gap: var(--sp-6); }
.footer-grid h6 { color: #fff; font-size: var(--fs-sm); text-transform: uppercase; letter-spacing: 1px; margin: 0 0 var(--sp-3); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; }
.footer-grid a { color: rgba(255,255,255,0.72); font-size: var(--fs-sm); display: inline-block; padding: 0.2rem 0; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); margin-top: var(--sp-8); padding-top: var(--sp-5); display: flex; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap; font-size: var(--fs-xs); color: rgba(255,255,255,0.5); }

/* ---------- Toasts ---------- */
.toast-stack { position: fixed; top: 80px; right: 20px; z-index: 2000; display: flex; flex-direction: column; gap: 10px; max-width: min(400px, calc(100vw - 40px)); }
.toast {
    display: flex; gap: 0.75rem; align-items: flex-start;
    background: #fff; border-radius: var(--r-lg); box-shadow: var(--sh-lg);
    border-left: 4px solid var(--gray-400); padding: 0.9rem 1rem;
    animation: toast-in 0.3s ease; font-size: var(--fs-sm);
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
.toast.info { border-left-color: var(--ramco-blue); }
.toast .t-ico { flex-shrink: 0; width: 20px; height: 20px; margin-top: 1px; }
.toast.success .t-ico { color: var(--success); }
.toast.error .t-ico { color: var(--danger); }
.toast.warning .t-ico { color: var(--warning); }
.toast.info .t-ico { color: var(--ramco-blue); }
.toast .t-body { flex: 1; min-width: 0; }
.toast .t-title { font-weight: 600; color: var(--gray-900); }
.toast .t-msg { color: var(--gray-500); }
.toast .t-close { background: none; border: none; cursor: pointer; color: var(--gray-400); padding: 2px; line-height: 1; font-size: 1rem; }
.toast .t-close:hover { color: var(--gray-700); }
@keyframes toast-in { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { to { opacity: 0; transform: translateX(30px); } }

/* ---------- Modal ---------- */
.modal-overlay {
    position: fixed; inset: 0; z-index: 2000; display: none; align-items: center; justify-content: center;
    background: rgba(11, 22, 41, 0.6); backdrop-filter: blur(3px); padding: 20px;
}
.modal-overlay.show { display: flex; }
.modal {
    background: #fff; border-radius: var(--r-xl); box-shadow: var(--sh-xl);
    max-width: 460px; width: 100%; overflow: hidden; animation: modal-in 0.25s ease;
}
@keyframes modal-in { from { opacity: 0; transform: translateY(18px) scale(0.97); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal-head { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--gray-100); display: flex; align-items: center; justify-content: space-between; }
.modal-head h5 { margin: 0; font-size: var(--fs-lg); font-weight: 700; }
.modal-body { padding: 1.5rem; text-align: center; }
.modal-body .m-ico { width: 56px; height: 56px; margin: 0 auto 1rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.modal-body .m-ico.success { background: var(--success-bg); color: var(--success); }
.modal-body .m-ico.error { background: var(--danger-bg); color: var(--danger); }
.modal-body .m-ico.warning { background: var(--warning-bg); color: var(--warning); }
.modal-body .m-ico svg { width: 28px; height: 28px; }
.modal-foot { padding: 1rem 1.5rem; border-top: 1px solid var(--gray-100); display: flex; justify-content: flex-end; gap: 0.75rem; }

/* ---------- Misc ---------- */
.muted { color: var(--gray-500); }
.center { text-align: center; }
.mt-1 { margin-top: var(--sp-1); } .mt-2 { margin-top: var(--sp-2); } .mt-3 { margin-top: var(--sp-3); } .mt-4 { margin-top: var(--sp-4); } .mt-5 { margin-top: var(--sp-5); } .mt-6 { margin-top: var(--sp-6); }
.mb-1 { margin-bottom: var(--sp-1); } .mb-2 { margin-bottom: var(--sp-2); } .mb-3 { margin-bottom: var(--sp-3); } .mb-4 { margin-bottom: var(--sp-4); } .mb-5 { margin-bottom: var(--sp-5); }
.w-100 { width: 100%; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 var(--sp-5); }

@media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .site-header nav ul { display: none; }
}
@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; }
    .site-header .container { height: auto; padding: var(--sp-3) var(--sp-4); }
}