/* ===========================
   TU-VAN.HTML — LANDING PAGE TƯ VẤN (CHỐT SALE)
   Đồng bộ phong cách & bảng màu với trang Hệ Thống (he-thong.html)
   =========================== */

:root {
  --tv-bg: #f8fafc;
  --tv-card-bg: #ffffff;
  --tv-line: #e2e8f0;
  --tv-text: #0f172a;
  --tv-muted: #475569;
  --tv-accent: #059669; /* Emerald Green */
  --tv-accent-hover: #047857;
  --tv-accent-light: #ecfdf5;
  --tv-dark: #0f172a;
}

.tv {
  background: var(--tv-bg);
  color: var(--tv-text);
  font-family: var(--font-body);
  line-height: 1.6;
  padding-top: var(--nav-h);
}

.tv-container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* BADGE & HEADINGS */
.tv-sec-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--tv-accent);
  background: var(--tv-accent-light);
  padding: 6px 16px;
  border-radius: 99px;
  margin-bottom: 16px;
  text-transform: uppercase;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.tv-sec-head {
  max-width: 780px;
  margin: 0 auto 40px;
  text-align: center;
}

.tv-h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  line-height: 1.25;
  color: var(--tv-text);
  margin-bottom: 12px;
}

.tv-sec-sub {
  font-size: 16px;
  color: var(--tv-muted);
  line-height: 1.6;
}

/* BUTTONS */
.tv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  padding: 16px 24px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  text-align: center;
}

.tv-btn-primary {
  background: var(--tv-accent);
  color: #ffffff;
  box-shadow: 0 10px 20px -5px rgba(5, 150, 105, 0.4);
}

.tv-btn-primary:hover {
  background: var(--tv-accent-hover);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 14px 24px -5px rgba(5, 150, 105, 0.5);
}

.tv-btn-telegram {
  background: #0088cc;
  color: #ffffff;
  box-shadow: 0 10px 20px -5px rgba(0, 136, 204, 0.3);
  margin-top: 16px;
  justify-content: center;
  text-align: center;
}

.tv-btn-telegram:hover {
  background: #0077b5;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 14px 24px -5px rgba(0, 136, 204, 0.4);
}

.tv-single-line {
  white-space: nowrap;
}

.tv-btn-block {
  display: flex;
  width: 100%;
  border: none;
}

/* HERO SECTION */
.tv-hero {
  padding: 80px 0 64px;
  background: #ffffff;
  border-bottom: 1px solid var(--tv-line);
}

.tv-hero-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}

.tv-hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 4.2vw, 44px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--tv-text);
  margin-bottom: 20px;
}

.tv-hero-text h1 .highlight {
  color: var(--tv-accent);
}

.tv-hero-sub {
  font-size: 17px;
  line-height: 1.65;
  color: var(--tv-muted);
  margin-bottom: 28px;
}

.tv-hero-card {
  background: var(--tv-bg);
  border: 1px solid var(--tv-line);
  border-top: 4px solid var(--tv-accent);
  border-radius: 12px;
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.04);
}

.tv-hero-card-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--tv-accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.tv-hero-card-big {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--tv-text);
  line-height: 1;
  margin-bottom: 12px;
}

.tv-hero-card p {
  font-size: 14px;
  color: var(--tv-muted);
  line-height: 1.6;
}

/* SECTIONS COMMON */
.tv-section {
  padding: 88px 0;
  border-top: 1px solid var(--tv-line);
}

/* REGISTER & PAYMENT SECTION (EQUAL HEIGHT BOXES) */
.tv-register-sec {
  background: #ffffff;
}

.tv-register-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: stretch; /* Equal height for both cards! */
}

.tv-form {
  background: var(--tv-bg);
  border: 1px solid var(--tv-line);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.tv-form-fields {
  display: flex;
  flex-direction: column;
}

.tv-form-row {
  margin-bottom: 18px;
}

.tv-form-row label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--tv-text);
}

.tv-form-row input,
.tv-form-row textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--tv-line);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--tv-text);
  background: #ffffff;
  transition: border-color 0.2s;
}

.tv-form-row input:focus,
.tv-form-row textarea:focus {
  outline: none;
  border-color: var(--tv-accent);
}

/* PAYMENT CARD */
.tv-payment {
  background: var(--tv-bg);
  border: 1px solid var(--tv-line);
  border-top: 4px solid var(--tv-accent);
  border-radius: 12px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.tv-pay-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--tv-line);
}

.tv-pay-head h3 {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--tv-text);
}

.tv-payment-fee {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--tv-accent);
}

.tv-payment-fee span {
  font-size: 14px;
  font-weight: 600;
}

.tv-pay-details {
  list-style: none;
  padding: 0;
  margin-bottom: 14px;
}

.tv-pay-details li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--tv-line);
  color: var(--tv-muted);
}

.tv-wallet-row {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.tv-wallet-addr {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--tv-text);
  background: #ffffff;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--tv-line);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
}

.tv-copy-btn-sm {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--tv-accent-light);
  color: var(--tv-accent);
  border: 1px solid rgba(5, 150, 105, 0.3);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s;
  flex-shrink: 0;
}

.tv-copy-btn-sm:hover {
  background: var(--tv-accent);
  color: #ffffff;
}

.tv-qr-wrap {
  text-align: center;
  margin: 14px 0;
}

.tv-qr-large {
  display: block;
  width: 190px;
  height: 190px;
  margin: 0 auto;
  border: 1px solid var(--tv-line);
  border-radius: 12px;
  background: #ffffff;
  padding: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

/* OUTCOME & PROCESS SECTION */
.tv-process-section {
  background: var(--tv-bg);
}

.tv-outcome-box {
  background: #ffffff;
  border: 1px solid var(--tv-line);
  border-radius: 16px;
  padding: 40px 32px;
}

.tv-reasons-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.tv-reason-card {
  text-align: left;
  background: var(--tv-bg);
  border: 1px solid var(--tv-line);
  border-radius: 10px;
  padding: 24px 20px;
}

.tv-reason-icon {
  font-size: 26px;
  margin-bottom: 12px;
}

.tv-reason-card h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--tv-text);
  margin-bottom: 8px;
}

.tv-reason-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--tv-muted);
}

/* PROCESS STEPS */
.tv-process {
  display: flex;
  align-items: flex-start;
  margin-top: 32px;
}

.tv-process-step {
  flex: 1;
  text-align: center;
  padding: 0 16px;
}

.tv-process-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--tv-accent-light);
  color: var(--tv-accent);
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 16px;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.tv-process-step h4 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--tv-text);
  margin-bottom: 8px;
}

.tv-process-step p {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--tv-muted);
}

.tv-process-line {
  flex: 0 0 auto;
  width: 60px;
  height: 2px;
  background: var(--tv-line);
  margin-top: 24px;
}

/* CLOSING BANNER */
.tv-closing {
  background: var(--tv-accent-light);
  border-top: 1px solid rgba(5, 150, 105, 0.2);
  text-align: center;
  padding: 80px 24px;
}

.tv-closing h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 700;
  color: #064e3b;
  line-height: 1.35;
  margin-bottom: 28px;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .tv-hero-inner { grid-template-columns: 1fr; }
  .tv-register-grid { grid-template-columns: 1fr; }
  .tv-reasons-grid { grid-template-columns: 1fr; }
  .tv-process { flex-direction: column; align-items: stretch; gap: 32px; }
  .tv-process-line { display: none; }
}