/* ═══════════════════════════════════════════════════════════
   MAILTECH AUTOMATION BUILDER — Premium Dark Theme
   ═══════════════════════════════════════════════════════════ */
:root {
    --primary-bg: #0f172a;
    --secondary-bg: #1e293b;
    --tertiary-bg: #334155;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --border-subtle: rgba(255,255,255,0.08);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255,255,255,0.08);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 12px;
    --shadow-heavy: 0 25px 50px -12px rgba(0,0,0,0.5);
    /* Trigger Colors */
    --clr-indigo: #6366f1; --clr-green: #22c55e; --clr-blue: #3b82f6;
    --clr-amber: #f59e0b; --clr-purple: #a855f7; --clr-red: #ef4444;
    --clr-slate: #64748b; --clr-pink: #ec4899; --clr-teal: #14b8a6;
    --clr-cyan: #06b6d4; --clr-yellow: #eab308; --clr-violet: #8b5cf6;
}

* { box-sizing: border-box; }

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--primary-bg);
    color: var(--text-main);
    min-height: 100vh;
    margin: 0;
    padding: 2rem 0;
}

/* ── Glass Card ── */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-heavy);
    padding: 2rem;
}

/* ── Top Bar ── */
.top-bar {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.top-bar .btn-back {
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--border-subtle);
    background: transparent;
    color: var(--text-main);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}
.top-bar .btn-back:hover { background: var(--accent); border-color: var(--accent); }
.top-bar h2 { font-weight: 800; margin: 0; flex: 1; }
.top-bar .btn-save {
    background: linear-gradient(135deg, var(--accent), #4f46e5);
    border: none; color: #fff; padding: 12px 28px;
    border-radius: var(--radius-sm); font-weight: 700;
    cursor: pointer; font-size: 0.95rem;
    transition: all 0.3s;
}
.top-bar .btn-save:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(99,102,241,0.4); }

/* ── AI Assistant Bar ── */
.ai-bar {
    background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(30,41,59,0.7));
    border: 1px solid rgba(99,102,241,0.25);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex; align-items: center; gap: 1rem;
    margin-bottom: 1.5rem;
}
.ai-bar .ai-icon {
    width: 44px; height: 44px;
    background: rgba(99,102,241,0.2);
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent); font-size: 1.2rem; flex-shrink: 0;
}
.ai-bar .ai-text { flex: 1; }
.ai-bar .ai-text h6 { margin: 0 0 2px; font-weight: 700; font-size: 0.9rem; }
.ai-bar .ai-text p { margin: 0; font-size: 0.8rem; color: var(--text-muted); }
.ai-bar .ai-badge {
    background: rgba(99,102,241,0.2); color: var(--accent-hover);
    padding: 6px 14px; border-radius: 20px;
    font-size: 0.75rem; font-weight: 700; white-space: nowrap;
}

/* ── Automation Name ── */
.name-input {
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
    margin-bottom: 1.5rem;
}
.name-input:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255,255,255,0.1);
    box-shadow: 0 0 20px rgba(99,102,241,0.15);
}
.name-input::placeholder { color: var(--text-dim); }

/* ── Section Header ── */
.section-header {
    display: flex; align-items: center; gap: 0.75rem;
    margin-bottom: 1.25rem;
    font-size: 0.85rem; font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.section-header i { font-size: 1rem; color: var(--accent); }

/* ── 3×3 Trigger Grid ── */
.trigger-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 1.5rem;
}
.trigger-card {
    background: rgba(255,255,255,0.04);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}
.trigger-card::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at center, var(--card-clr, var(--accent)) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.4s;
}
.trigger-card:hover {
    border-color: rgba(255,255,255,0.15);
    transform: translateY(-3px);
    background: rgba(255,255,255,0.07);
}
.trigger-card:hover::before { opacity: 0.08; }
.trigger-card.active {
    border-color: var(--card-clr, var(--accent));
    background: rgba(255,255,255,0.08);
    box-shadow: 0 0 30px color-mix(in srgb, var(--card-clr, var(--accent)) 25%, transparent);
}
.trigger-card.active::before { opacity: 0.12; }
.trigger-card .tc-icon {
    width: 48px; height: 48px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem;
    margin: 0 auto 0.75rem;
    position: relative; z-index: 1;
    transition: transform 0.3s;
}
.trigger-card:hover .tc-icon { transform: scale(1.1); }
.trigger-card .tc-label {
    font-weight: 700; font-size: 0.82rem;
    position: relative; z-index: 1;
    line-height: 1.3;
}
.trigger-card .tc-desc {
    font-size: 0.7rem; color: var(--text-dim);
    position: relative; z-index: 1;
    margin-top: 4px;
}

/* ── Trigger Config Panel ── */
.trigger-config {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s, padding 0.4s;
    opacity: 0;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-md);
    padding: 0 1.25rem;
}
.trigger-config.open {
    max-height: 200px;
    opacity: 1;
    padding: 1.25rem;
    margin-bottom: 1rem;
}
.trigger-config label {
    display: block;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.trigger-config select,
.trigger-config input {
    width: 100%;
    background: rgba(255,255,255,0.08);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.3s;
}
.trigger-config select:focus,
.trigger-config input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(99,102,241,0.15);
}
.trigger-config select option { background: var(--secondary-bg); color: #fff; }

/* ── Steps Timeline ── */
.steps-timeline { position: relative; margin: 2rem 0; }

.step-node {
    position: relative;
    padding-left: 64px;
    margin-bottom: 24px;
    animation: stepSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) both;
}
@keyframes stepSlideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}
.step-node::before {
    content: '';
    position: absolute;
    left: 23px; top: 50px; bottom: -28px;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent), rgba(99,102,241,0.1));
    border-radius: 4px;
}
.step-node:last-child::before { display: none; }
.step-icon {
    position: absolute; left: 0; top: 8px;
    width: 48px; height: 48px;
    background: linear-gradient(135deg, var(--step-clr, var(--accent)), color-mix(in srgb, var(--step-clr, var(--accent)) 70%, #000));
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; color: #fff;
    z-index: 1;
    box-shadow: 0 8px 20px color-mix(in srgb, var(--step-clr, var(--accent)) 30%, transparent);
    border: 2px solid rgba(255,255,255,0.1);
}
.step-body {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    transition: all 0.3s;
}
.step-body:hover {
    border-color: rgba(255,255,255,0.15);
    transform: translateX(4px);
}
.step-header {
    display: flex; align-items: center; gap: 0.75rem;
    margin-bottom: 1rem;
}
.step-header select {
    background: transparent; border: none;
    color: var(--accent-hover); font-weight: 700;
    font-family: inherit; font-size: 0.9rem;
    cursor: pointer; padding: 4px 0;
}
.step-header select:focus { outline: none; }
.step-header select option { background: var(--secondary-bg); color: #fff; }
.step-header .step-actions { margin-left: auto; display: flex; gap: 8px; }
.step-header .step-actions button {
    background: transparent; border: none;
    color: var(--text-dim); cursor: pointer;
    font-size: 1rem; padding: 4px;
    border-radius: 8px; transition: all 0.2s;
}
.step-header .step-actions button:hover { color: var(--clr-red); background: rgba(239,68,68,0.1); }
.step-inputs select,
.step-inputs input {
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.88rem;
    transition: all 0.3s;
}
.step-inputs select:focus,
.step-inputs input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(99,102,241,0.12);
}
.step-inputs select option { background: var(--secondary-bg); color: #fff; }
.step-inputs label {
    display: block;
    font-size: 0.75rem; font-weight: 700;
    color: var(--text-muted); margin-bottom: 5px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.step-inputs .row { display: flex; gap: 12px; }
.step-inputs .row > div { flex: 1; }
.step-inputs .info-text {
    font-size: 0.75rem; margin-top: 8px;
    display: flex; align-items: center; gap: 6px;
}
.step-inputs .info-text.info-blue { color: var(--clr-blue); }
.step-inputs .info-text.info-yellow { color: var(--clr-yellow); }

/* ── Add Step Button ── */
.add-step-area { text-align: center; margin: 1.5rem 0 2rem; position: relative; }
.btn-add-step {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(99,102,241,0.1);
    border: 2px dashed rgba(99,102,241,0.3);
    color: var(--accent-hover);
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 700; font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}
.btn-add-step:hover {
    background: rgba(99,102,241,0.2);
    border-color: var(--accent);
    transform: scale(1.05);
}

/* ── Step Type Popover ── */
.step-popover {
    display: none;
    position: absolute;
    left: 50%; top: 100%;
    transform: translateX(-50%);
    background: var(--secondary-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    z-index: 100;
    width: 420px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
    animation: popIn 0.25s ease-out;
}
@keyframes popIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-8px) scale(0.95); }
    to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}
.step-popover.show { display: block; }
.step-popover-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}
.step-popover-item {
    display: flex; flex-direction: column;
    align-items: center; gap: 6px;
    padding: 12px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-main);
    font-family: inherit;
}
.step-popover-item:hover {
    background: rgba(255,255,255,0.06);
    border-color: var(--border-subtle);
}
.step-popover-item i { font-size: 1.2rem; }
.step-popover-item span { font-size: 0.72rem; font-weight: 600; text-align: center; line-height: 1.2; }

/* ── Save Area ── */
.save-area {
    text-align: center;
    padding: 2.5rem;
}
.btn-save-main {
    background: linear-gradient(135deg, var(--accent), #4f46e5);
    border: none; color: #fff;
    padding: 16px 48px;
    border-radius: 50px;
    font-weight: 800; font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    box-shadow: 0 10px 30px rgba(99,102,241,0.3);
}
.btn-save-main:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99,102,241,0.45);
}

/* ── Error Banner ── */
.error-banner {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: #f87171;
    font-size: 0.85rem;
    margin-top: 1.5rem;
    display: flex; align-items: center; gap: 8px;
}

/* ── Toast ── */
.toast-msg {
    position: fixed; bottom: 30px; right: 30px;
    background: var(--secondary-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 14px 24px;
    color: var(--text-main);
    font-size: 0.9rem; font-weight: 600;
    z-index: 9999;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    animation: toastIn 0.3s ease-out, toastOut 0.3s ease-in 2.7s forwards;
}
@keyframes toastIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes toastOut { from { opacity: 1; } to { opacity: 0; transform: translateY(20px); } }

/* ── Responsive ── */
@media (max-width: 768px) {
    .trigger-grid { grid-template-columns: repeat(2, 1fr); }
    .step-popover { width: 320px; }
    .step-popover-grid { grid-template-columns: repeat(2, 1fr); }
    .step-node { padding-left: 52px; }
    body { padding: 1rem 0; }
    .glass-card { padding: 1.25rem; }
}
@media (max-width: 480px) {
    .trigger-grid { grid-template-columns: 1fr 1fr; }
    .top-bar { gap: 0.5rem; }
}